CVE-2025-20350 (GCVE-0-2025-20350)

Vulnerability from cvelistv5 – Published: 2025-10-15 16:15 – Updated: 2025-10-15 17:42
VLAI?
Summary
A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco SIP Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to a buffer overflow when an affected device processes HTTP packets. An attacker could exploit this vulnerability by sending crafted HTTP input to the device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: To exploit this vulnerability, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
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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              "status": "affected",
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            {
              "status": "affected",
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            {
              "status": "affected",
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            },
            {
              "status": "affected",
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      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco SIP Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\r\n\r\nThis vulnerability is due to a buffer overflow when an affected device processes HTTP packets. An attacker could exploit this vulnerability by sending crafted HTTP input to the device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.\r\nNote: To exploit this vulnerability, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
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      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-121",
              "description": "Stack-based Buffer Overflow",
              "lang": "en",
              "type": "cwe"
            }
          ]
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        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-phone-dos-FPyjLV7A",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-dos-FPyjLV7A"
        }
      ],
      "source": {
        "advisory": "cisco-sa-phone-dos-FPyjLV7A",
        "defects": [
          "CSCwn51601"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2025-20350",
    "datePublished": "2025-10-15T16:15:10.244Z",
    "dateReserved": "2024-10-10T19:15:13.257Z",
    "dateUpdated": "2025-10-15T17:42:59.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-20350\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2025-10-15T17:15:48.880\",\"lastModified\":\"2025-12-04T21:29:46.177\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco SIP Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\\r\\n\\r\\nThis vulnerability is due to a buffer overflow when an affected device processes HTTP packets. An attacker could exploit this vulnerability by sending crafted HTTP input to the device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.\\r\\nNote: To exploit this vulnerability, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by 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{\"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 vulnerabilities that are described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-dos-FPyjLV7A\", \"name\": \"cisco-sa-phone-dos-FPyjLV7A\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco SIP Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\\r\\n\\r\\nThis vulnerability is due to a buffer overflow when an affected device processes HTTP packets. An attacker could exploit this vulnerability by sending crafted HTTP input to the device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.\\r\\nNote: To exploit this vulnerability, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-121\", \"description\": \"Stack-based Buffer Overflow\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2025-10-15T16:15:10.244Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-20350\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-15T17:42:59.642Z\", \"dateReserved\": \"2024-10-10T19:15:13.257Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2025-10-15T16:15:10.244Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.