cvelistv5 - cve-2025-20335

CVE-2025-20335 (GCVE-0-2025-20335)

Vulnerability from cvelistv5 – Published: 2025-09-03 17:41 – Updated: 2025-09-03 17:56

Summary

A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to write arbitrary files on an affected device. This vulnerability is due to a lack of proper authentication controls. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to perform arbitrary file writes to specific directories in the underlying operating system. Note: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CWE

CWE-284 - Improper Access Control

Assigner

cisco

References

URL

Tags

https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

	Vendor	Product	Version
	Cisco	Cisco Session Initiation Protocol (SIP) Software	Affected: 12.1(1)SR1 Affected: 11.5(1) Affected: 10.3(2) Affected: 10.2(2) Affected: 10.3(1) Affected: 10.3(1)SR4 Affected: 11.0(1) Affected: 10.4(1)SR2 3rd Party Affected: 11.7(1) Affected: 12.1(1) Affected: 11.0(0.7) MPP Affected: 9.3(4) 3rd Party Affected: 12.5(1)SR2 Affected: 10.2(1)SR1 Affected: 9.3(4)SR3 3rd Party Affected: 10.2(1) Affected: 12.5(1) Affected: 10.3(1)SR2 Affected: 11-0-1MSR1-1 Affected: 10.4(1) 3rd Party Affected: 12.5(1)SR1 Affected: 11.5(1)SR1 Affected: 10.1(1)SR2 Affected: 12.0(1)SR2 Affected: 12.6(1) Affected: 10.3(1.11) 3rd Party Affected: 12.0(1) Affected: 12.0(1)SR1 Affected: 9.3(3) Affected: 12.5(1)SR3 Affected: 10.3(1)SR4b Affected: 9.3(4)SR1 3rd Party Affected: 10.3(1)SR5 Affected: 10.1(1.9) Affected: 10.3(1.9) 3rd Party Affected: 9.3(4)SR2 3rd Party Affected: 10.3(1)SR1 Affected: 10.3(1)SR3 Affected: 10.1(1)SR1 Affected: 12.0(1)SR3 Affected: 12.6(1)SR1 Affected: 12.7(1) Affected: 10.3(1)SR6 Affected: 12.8(1) Affected: 12.7(1)SR1 Affected: 11.0(2)SR1 Affected: 11.0(4) Affected: 11.0(2) Affected: 11.0(4)SR3 Affected: 11.0(5) Affected: 11.0(3)SR2 Affected: 11.0(3)SR4 Affected: 11.0(3)SR3 Affected: 11.0(2)SR2 Affected: 11.0(4)SR1 Affected: 11.0(5)SR3 Affected: 11.0(3) Affected: 11.0(5)SR2 Affected: 11.0(3)SR6 Affected: 11.0(5)SR1 Affected: 11.0(4)SR2 Affected: 11.0(3)SR1 Affected: 11.0(3)SR5 Affected: 11.0(6) Affected: 12.8(1)SR1 Affected: 12.8(1)SR2 Affected: 14.0(1) Affected: 14.0(1)SR1 Affected: 11.0(6)SR1 Affected: 10.3(1)SR7 Affected: 14.0(1)SR2 Affected: 14.1(1) Affected: 14.0(1)SR3 Affected: 11.0(6)SR2 Affected: 14.1(1)SR1 Affected: 14.1(1)SR2 Affected: 11.0(6)SR4 Affected: 14.2(1) Affected: 14.2(1)SR1 Affected: 11.0(6)SR5 Affected: 14.1(1)SR3 Affected: 14.2(1)SR2 Affected: 3.1(1) Affected: 3.0(1) Affected: 2.3(1) Affected: 2.3(1)SR1 Affected: 2.2(1) Affected: 2.1(1) Affected: 2.0(1) Affected: 14.2(1)SR3 Affected: 3.1(1)SR1 Affected: 14.3(1) Affected: 3.2(1) Affected: 14.3(1)SR1 Affected: 14.2(1)SR4 Affected: 11.0(6)SR6

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\"affected\", \"version\": \"12.0(1)SR1\"}, {\"status\": \"affected\", \"version\": \"9.3(3)\"}, {\"status\": \"affected\", \"version\": \"12.5(1)SR3\"}, {\"status\": \"affected\", \"version\": \"10.3(1)SR4b\"}, {\"status\": \"affected\", \"version\": \"9.3(4)SR1 3rd Party\"}, {\"status\": \"affected\", \"version\": \"10.3(1)SR5\"}, {\"status\": \"affected\", \"version\": \"10.1(1.9)\"}, {\"status\": \"affected\", \"version\": \"10.3(1.9) 3rd Party\"}, {\"status\": \"affected\", \"version\": \"9.3(4)SR2 3rd Party\"}, {\"status\": \"affected\", \"version\": \"10.3(1)SR1\"}, {\"status\": \"affected\", \"version\": \"10.3(1)SR3\"}, {\"status\": \"affected\", \"version\": \"10.1(1)SR1\"}, {\"status\": \"affected\", \"version\": \"12.0(1)SR3\"}, {\"status\": \"affected\", \"version\": \"12.6(1)SR1\"}, {\"status\": \"affected\", \"version\": \"12.7(1)\"}, {\"status\": \"affected\", \"version\": \"10.3(1)SR6\"}, {\"status\": \"affected\", \"version\": \"12.8(1)\"}, {\"status\": \"affected\", \"version\": \"12.7(1)SR1\"}, {\"status\": \"affected\", \"version\": \"11.0(2)SR1\"}, {\"status\": \"affected\", \"version\": \"11.0(4)\"}, {\"status\": \"affected\", \"version\": \"11.0(2)\"}, {\"status\": \"affected\", \"version\": \"11.0(4)SR3\"}, {\"status\": \"affected\", \"version\": \"11.0(5)\"}, {\"status\": \"affected\", \"version\": \"11.0(3)SR2\"}, {\"status\": \"affected\", \"version\": \"11.0(3)SR4\"}, {\"status\": \"affected\", \"version\": \"11.0(3)SR3\"}, {\"status\": \"affected\", \"version\": \"11.0(2)SR2\"}, {\"status\": \"affected\", \"version\": \"11.0(4)SR1\"}, {\"status\": \"affected\", \"version\": \"11.0(5)SR3\"}, {\"status\": \"affected\", \"version\": \"11.0(3)\"}, {\"status\": \"affected\", \"version\": \"11.0(5)SR2\"}, {\"status\": \"affected\", \"version\": \"11.0(3)SR6\"}, {\"status\": \"affected\", \"version\": \"11.0(5)SR1\"}, {\"status\": \"affected\", \"version\": \"11.0(4)SR2\"}, {\"status\": \"affected\", \"version\": \"11.0(3)SR1\"}, {\"status\": \"affected\", \"version\": \"11.0(3)SR5\"}, {\"status\": \"affected\", \"version\": \"11.0(6)\"}, {\"status\": \"affected\", \"version\": \"12.8(1)SR1\"}, {\"status\": \"affected\", \"version\": \"12.8(1)SR2\"}, {\"status\": \"affected\", \"version\": \"14.0(1)\"}, {\"status\": \"affected\", \"version\": \"14.0(1)SR1\"}, {\"status\": \"affected\", \"version\": \"11.0(6)SR1\"}, {\"status\": \"affected\", \"version\": \"10.3(1)SR7\"}, {\"status\": \"affected\", \"version\": \"14.0(1)SR2\"}, {\"status\": \"affected\", \"version\": \"14.1(1)\"}, {\"status\": \"affected\", \"version\": \"14.0(1)SR3\"}, {\"status\": \"affected\", \"version\": \"11.0(6)SR2\"}, {\"status\": \"affected\", \"version\": \"14.1(1)SR1\"}, {\"status\": \"affected\", \"version\": \"14.1(1)SR2\"}, {\"status\": \"affected\", \"version\": \"11.0(6)SR4\"}, {\"status\": \"affected\", \"version\": \"14.2(1)\"}, {\"status\": \"affected\", \"version\": \"14.2(1)SR1\"}, {\"status\": \"affected\", \"version\": \"11.0(6)SR5\"}, {\"status\": \"affected\", \"version\": \"14.1(1)SR3\"}, {\"status\": \"affected\", \"version\": \"14.2(1)SR2\"}, {\"status\": \"affected\", \"version\": \"3.1(1)\"}, {\"status\": \"affected\", \"version\": \"3.0(1)\"}, {\"status\": \"affected\", \"version\": \"2.3(1)\"}, {\"status\": \"affected\", \"version\": \"2.3(1)SR1\"}, {\"status\": \"affected\", \"version\": \"2.2(1)\"}, {\"status\": \"affected\", \"version\": \"2.1(1)\"}, {\"status\": \"affected\", \"version\": \"2.0(1)\"}, {\"status\": \"affected\", \"version\": \"14.2(1)SR3\"}, {\"status\": \"affected\", \"version\": \"3.1(1)SR1\"}, {\"status\": \"affected\", \"version\": \"14.3(1)\"}, {\"status\": \"affected\", \"version\": \"3.2(1)\"}, {\"status\": \"affected\", \"version\": \"14.3(1)SR1\"}, {\"status\": \"affected\", \"version\": \"14.2(1)SR4\"}, {\"status\": \"affected\", \"version\": \"11.0(6)SR6\"}], \"defaultStatus\": \"unknown\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-write-g3kcC5Df\", \"name\": \"cisco-sa-phone-write-g3kcC5Df\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to write arbitrary files on an affected device.\\r\\n\\r\\nThis vulnerability is due to a lack of proper authentication controls. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to perform arbitrary file writes to specific directories in the underlying operating system.\\r\\nNote: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-284\", \"description\": \"Improper Access Control\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2025-09-03T17:41:06.201Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-20335\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-09-03T17:56:55.586Z\", \"dateReserved\": \"2024-10-10T19:15:13.255Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2025-09-03T17:41:06.201Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

CISCO-SA-PHONE-WRITE-G3KCC5DF

Vulnerability from csaf_cisco - Published: 2025-09-03 16:00 - Updated: 2025-09-03 16:00

Summary

Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities

Notes

Summary

Multiple vulnerabilities in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 with Cisco Session Initiation Protocol (SIP) Software could allow an unauthenticated, remote attacker to conduct arbitrary file write and information disclosure attacks on an affected device. Note: To exploit these vulnerabilities, Web Access must be enabled on the phone. Web Access is disabled by default. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Vulnerable Products

At the time of publication, this vulnerability affected the following Cisco products if they were running a vulnerable release of Cisco SIP Phone Software and had Web Access enabled: Desk Phone 9800 Series IP Phone 7800 Series IP Phone 8800 Series Video Phone 8875 The Web Access feature is disabled by default. For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software ["#fs"] section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Determine Whether Web Access Is Enabled Web Access is disabled by default on Cisco phones. If a user can browse to the IP address listed in the phone configuration by following these steps, Web Access has been enabled: Choose the gear icon on the front of the phone to access the phone configuration and determine the IP address of the phone. Choose Admin settings > Network Setup > Ethernet setup or Wi-Fi client setup > IPv4 setup. Type the IP address in a browser window and click Enter. If the Device Information screen is displayed, then Web Access is enabled on the phone. To enable or disable Web Access, follow these steps: Log in to the Communications Manager to which the phone is registered using Admin privileges, which allow modification of devices. Choose Device > Phone. Type in the search criteria and choose Find. Choose the appropriate device from the Device Name list. Scroll down to Web Access, toggle between Enabled or Disabled as desired, and click Save. Verify that the desired state has been set by typing the IP address into a browser window and clicking Enter.

Products Confirmed Not Vulnerable

Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by these vulnerabilities. Cisco has confirmed that this vulnerability does not affect Cisco IP Phone 7800 or 8800 Series Phones that are running Cisco Multiplatform Firmware.

Details

The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit the other vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerability. Details about the vulnerabilities are as follows: CVE-2025-20335: Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Arbitrary File Write Vulnerability A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to write arbitrary files on an affected device. This vulnerability is due to a lack of proper authentication controls. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to perform arbitrary file writes to specific directories in the underlying operating system. Note: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCwn51679 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn51679"], CSCwn55709 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55709"], CSCwn55710 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55710"], CSCwn55712 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55712"], CSCwn55714 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55714"], CSCwn55725 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55725"], CSCwn55726 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55726"], CSCwn55727 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55727"], CSCwn55728 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55728"] CVE ID: CVE-2025-20335 Security Impact Rating (SIR): Medium CVSS Base Score: 5.3 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVE-2025-20336: Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Information Disclosure Vulnerability A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerability exists because the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. An attacker could exploit this vulnerability by sending a crafted packet to the IP address of a device that has Web Access enabled. A successful exploit could allow the attacker to access sensitive information from the device. Note: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCwn51677 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn51677"], CSCwn52909 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52909"], CSCwn52910 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52910"], CSCwn52911 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52911"], CSCwn52913 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52913"], CSCwn52919 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52919"], CSCwn52920 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52920"], CSCwn52921 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52921"], CSCwn52922 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52922"] CVE ID: CVE-2025-20336 Security Impact Rating (SIR): Medium CVSS Base Score: 5.3 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Workarounds

There are no workarounds that address these vulnerabilities.

Fixed Software

When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Fixed Releases At the time of publication, the release information in the following tables was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerabilities that are described in this advisory and which release included the fix for these vulnerabilities. Desk Phone 9800 Series Cisco SIP Software Release First Fixed Release 3 3.3(1) IP Phone 7800 and 8800 Series Cisco SIP Software Release First Fixed Release Earlier than 14.3 Migrate to a fixed release. 14.3 14.3(1)SR2 IP Phone 8821 Cisco SIP Software Release First Fixed Release Earlier than 11 Migrate to a fixed release. 11 11.0(6)SR7 Video Phone 8875 Cisco SIP Software Release First Fixed Release 2.3(1)SR1 and earlier Migrate to a fixed release. 3 3.3(1) The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.

Vulnerability Policy

To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

Exploitation and Public Announcements

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Source

CVE-2025-20335: This vulnerability was found during internal security testing by Kent Yoder of the Cisco Advanced Security Initiatives Group (ASIG). CVE-2025-20336: This vulnerability was found during internal security testing by Zach Sanchez of the Cisco ASIG.

Legal Disclaimer

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.

JSON

To clipboard

{
  "document": {
    "acknowledgments": [
      {
        "summary": "CVE-2025-20335: This vulnerability was found during internal security testing by Kent Yoder of the Cisco Advanced Security Initiatives Group (ASIG).\r\n\r\nCVE-2025-20336: This vulnerability was found during internal security testing by Zach Sanchez of the Cisco ASIG."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "Multiple vulnerabilities in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 with Cisco Session Initiation Protocol (SIP) Software could allow an unauthenticated, remote attacker to conduct arbitrary file write and information disclosure attacks on an affected device.\r\n\r\nNote: To exploit these vulnerabilities, Web Access must be enabled on the phone. Web Access is disabled by default.\r\n\r\nFor more information about these vulnerabilities, see the Details [\"#details\"] section of this advisory.\r\n\r\nCisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.\r\n\r\n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "At the time of publication, this vulnerability affected the following Cisco products if they were running a vulnerable release of Cisco SIP Phone Software and had Web Access enabled:\r\n\r\nDesk Phone 9800 Series\r\nIP Phone 7800 Series\r\nIP Phone 8800 Series\r\nVideo Phone 8875\r\n\r\nThe Web Access feature is disabled by default.\r\n\r\nFor information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software [\"#fs\"] section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.\r\n  Determine Whether Web Access Is Enabled\r\nWeb Access is disabled by default on Cisco phones. If a user can browse to the IP address listed in the phone configuration by following these steps, Web Access has been enabled:\r\n\r\nChoose the gear icon on the front of the phone to access the phone configuration and determine the IP address of the phone.\r\nChoose Admin settings \u003e Network Setup \u003e Ethernet setup or Wi-Fi client setup \u003e IPv4 setup.\r\nType the IP address in a browser window and click Enter.\r\n\r\nIf the Device Information screen is displayed, then Web Access is enabled on the phone.\r\n\r\nTo enable or disable Web Access, follow these steps:\r\n\r\n\r\nLog in to the Communications Manager to which the phone is registered using Admin privileges, which allow modification of devices.\r\nChoose Device \u003e Phone.\r\nType in the search criteria and choose Find.\r\nChoose the appropriate device from the Device Name list.\r\nScroll down to Web Access, toggle between Enabled or Disabled as desired, and click Save.\r\nVerify that the desired state has been set by typing the IP address into a browser window and clicking Enter.",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by these vulnerabilities.\r\n\r\nCisco has confirmed that this vulnerability does not affect Cisco IP Phone 7800 or 8800 Series Phones that are running Cisco Multiplatform Firmware.",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit the other vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerability.\r\n\r\nDetails about the vulnerabilities are as follows:\r\n\r\nCVE-2025-20335: Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Arbitrary File Write Vulnerability\r\n\r\nA vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to write arbitrary files on an affected device.\r\n\r\nThis vulnerability is due to a lack of proper authentication controls. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to perform arbitrary file writes to specific directories in the underlying operating system.\r\n\r\nNote: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\nBug ID(s): CSCwn51679 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn51679\"], CSCwn55709 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55709\"], CSCwn55710 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55710\"], CSCwn55712 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55712\"], CSCwn55714 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55714\"], CSCwn55725 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55725\"], CSCwn55726 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55726\"], CSCwn55727 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55727\"], CSCwn55728 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55728\"]\r\nCVE ID: CVE-2025-20335\r\nSecurity Impact Rating (SIR): Medium\r\nCVSS Base Score: 5.3\r\nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\r\n\r\nCVE-2025-20336: Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Information Disclosure Vulnerability\r\n\r\nA vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to access sensitive information on an affected device.\r\n\r\nThis vulnerability exists because the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. An attacker could exploit this vulnerability by sending a crafted packet to the IP address of a device that has Web Access enabled. A successful exploit could allow the attacker to access sensitive information from the device.\r\n\r\nNote: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\nBug ID(s): CSCwn51677 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn51677\"], CSCwn52909 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52909\"], CSCwn52910 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52910\"], CSCwn52911 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52911\"], CSCwn52913 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52913\"], CSCwn52919 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52919\"], CSCwn52920 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52920\"], CSCwn52921 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52921\"], CSCwn52922 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52922\"]\r\nCVE ID: CVE-2025-20336\r\nSecurity Impact Rating (SIR): Medium\r\nCVSS Base Score: 5.3\r\nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
        "title": "Details"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address these vulnerabilities.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "When considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n      Fixed Releases\r\nAt the time of publication, the release information in the following tables was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.\r\n\r\nThe left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerabilities that are described in this advisory and which release included the fix for these vulnerabilities.\r\n\r\nDesk Phone 9800 Series\r\n        Cisco SIP Software Release  First Fixed Release          3  3.3(1)\r\nIP Phone 7800 and 8800 Series\r\n           Cisco SIP Software Release  First Fixed Release          Earlier than 14.3  Migrate to a fixed release.      14.3  14.3(1)SR2\r\nIP Phone 8821\r\n           Cisco SIP Software Release  First Fixed Release          Earlier than 11  Migrate to a fixed release.      11  11.0(6)SR7\r\nVideo Phone 8875\r\n        Cisco SIP Software Release  First Fixed Release          2.3(1)SR1 and earlier  Migrate to a fixed release.      3  3.3(1)\r\nThe Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
        "title": "Vulnerability Policy"
      },
      {
        "category": "general",
        "text": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "CVE-2025-20335: This vulnerability was found during internal security testing by Kent Yoder of the Cisco Advanced Security Initiatives Group (ASIG).\r\n\r\nCVE-2025-20336: This vulnerability was found during internal security testing by Zach Sanchez of the Cisco ASIG.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
        "title": "Legal Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@cisco.com",
      "issuing_authority": "Cisco PSIRT",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-write-g3kcC5Df"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "CSCwn51679",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn51679"
      },
      {
        "category": "external",
        "summary": "CSCwn55709",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55709"
      },
      {
        "category": "external",
        "summary": "CSCwn55710",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55710"
      },
      {
        "category": "external",
        "summary": "CSCwn55712",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55712"
      },
      {
        "category": "external",
        "summary": "CSCwn55714",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55714"
      },
      {
        "category": "external",
        "summary": "CSCwn55725",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55725"
      },
      {
        "category": "external",
        "summary": "CSCwn55726",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55726"
      },
      {
        "category": "external",
        "summary": "CSCwn55727",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55727"
      },
      {
        "category": "external",
        "summary": "CSCwn55728",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn55728"
      },
      {
        "category": "external",
        "summary": "CSCwn51677",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn51677"
      },
      {
        "category": "external",
        "summary": "CSCwn52909",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52909"
      },
      {
        "category": "external",
        "summary": "CSCwn52910",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52910"
      },
      {
        "category": "external",
        "summary": "CSCwn52911",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52911"
      },
      {
        "category": "external",
        "summary": "CSCwn52913",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52913"
      },
      {
        "category": "external",
        "summary": "CSCwn52919",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52919"
      },
      {
        "category": "external",
        "summary": "CSCwn52920",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52920"
      },
      {
        "category": "external",
        "summary": "CSCwn52921",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52921"
      },
      {
        "category": "external",
        "summary": "CSCwn52922",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwn52922"
      },
      {
        "category": "external",
        "summary": "considering software upgrades",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisories page",
        "url": "https://www.cisco.com/go/psirt"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities",
    "tracking": {
      "current_release_date": "2025-09-03T16:00:00+00:00",
      "generator": {
        "date": "2025-09-03T15:55:06+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-phone-write-g3kcC5Df",
      "initial_release_date": "2025-09-03T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2025-09-03T15:54:42+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Session Initiation Protocol (SIP) Software",
            "product": {
              "name": "Cisco Session Initiation Protocol (SIP) Software ",
              "product_id": "CSAFPID-277608"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-20335",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn55710"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn55727"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn55709"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn55725"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn55728"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn55726"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn55712"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn51679"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn55714"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-277608"
        ]
      },
      "release_date": "2025-09-03T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-277608"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-277608"
          ]
        }
      ],
      "title": "Cisco IP Phone 7800, 8800, and 9800 Series with SIP Firmware Arbitrary File Write Vulnerability"
    },
    {
      "cve": "CVE-2025-20336",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn52910"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn52921"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn52909"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn52919"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn52920"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn52922"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn52911"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn51677"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwn52913"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-277608"
        ]
      },
      "release_date": "2025-09-03T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-277608"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-277608"
          ]
        }
      ],
      "title": "Cisco IP Phone 7800, 8800, and 9800 Series with SIP Firmware Information Disclosure Vulnerability"
    }
  ]
}

FKIE_CVE-2025-20335

Vulnerability from fkie_nvd - Published: 2025-09-03 18:15 - Updated: 2025-09-04 15:35

Severity ?

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-write-g3kcC5Df

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to write arbitrary files on an affected device.\r\n\r\nThis vulnerability is due to a lack of proper authentication controls. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to perform arbitrary file writes to specific directories in the underlying operating system.\r\nNote: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default."
    }
  ],
  "id": "CVE-2025-20335",
  "lastModified": "2025-09-04T15:35:29.497",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "psirt@cisco.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-09-03T18:15:34.393",
  "references": [
    {
      "source": "psirt@cisco.com",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-write-g3kcC5Df"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Primary"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2025-20335 (GCVE-0-2025-20335)

CISCO-SA-PHONE-WRITE-G3KCC5DF

FKIE_CVE-2025-20335

Tags

Sightings

Nomenclature