CVE-2026-0228 (GCVE-0-2026-0228)
Vulnerability from – Published: 2026-02-11 17:55 – Updated: 2026-02-11 19:04
VLAI?
Title
PAN-OS: Improper Validation of Terminal Server Agent Certificate
Summary
An improper certificate validation vulnerability in PAN-OS allows users to connect Terminal Server Agents on Windows to PAN-OS using expired certificates even if the PAN-OS configuration would not normally permit them to do so.
Severity ?
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Palo Alto Networks | Cloud NGFW |
Unaffected:
All
(custom)
|
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|
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Credits
Paolo Nero of Wellcomm Engineering
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CVE-2026-0229 (GCVE-0-2026-0229)
Vulnerability from – Published: 2026-02-11 17:56 – Updated: 2026-02-11 18:58
VLAI?
Title
PAN-OS: Denial of Service in Advanced DNS Security Feature
Summary
A denial-of-service (DoS) vulnerability in the Advanced DNS Security (ADNS) feature of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker to initiate system reboots using a maliciously crafted packet. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode.
Cloud NGFW and Prisma Access® are not impacted by this vulnerability.
Severity ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Palo Alto Networks | Cloud NGFW |
Unaffected:
All
(custom)
|
||||||||||||
|
||||||||||||||
Credits
an internal reporter, jliu@TikkalaSecurity,
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CVE-2026-0227 (GCVE-0-2026-0227)
Vulnerability from – Published: 2026-01-15 18:45 – Updated: 2026-01-30 23:36
VLAI?
Title
PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal
Summary
A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.
Severity ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Palo Alto Networks | Cloud NGFW |
Unaffected:
All
(custom)
|
||||||||||||
|
||||||||||||||
Credits
an external reporter
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}
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}
],
"source": {
"discovery": "USER"
},
"timeline": [
{
"lang": "en",
"time": "2026-01-16T18:15:00.000Z",
"value": "Added 10.2.4-h43 to Prisma Access Fix Versions."
},
{
"lang": "en",
"time": "2026-01-14T18:15:00.000Z",
"value": "Changed recommended fix version from 11.2.4-h14 to 11.2.4-h15."
},
{
"lang": "en",
"time": "2026-01-14T17:00:00.000Z",
"value": "Initial Publication"
},
{
"lang": "en",
"time": "2026-01-30T23:30:00.000Z",
"value": "Fixed a broken link and updated the Solutions table."
}
],
"title": "PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal",
"workarounds": [
{
"lang": "eng",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "No known workarounds exist for this issue."
}
],
"value": "No known workarounds exist for this issue."
}
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CVE-2018-14634 (GCVE-0-2018-14634)
Vulnerability from – Published: 2018-09-25 21:00 – Updated: 2026-01-27 13:34
VLAI?
Summary
An integer overflow flaw was found in the Linux kernel's create_elf_tables() function. An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system. Kernel versions 2.6.x, 3.10.x and 4.14.x are believed to be vulnerable.
Severity ?
7.8 (High)
CWE
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The Linux Foundation | kernel |
Affected:
2.6.x, 3.10.x, 4.14.x
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CVE-2025-4619 (GCVE-0-2025-4619)
Vulnerability from – Published: 2025-11-13 20:24 – Updated: 2025-11-14 18:08
VLAI?
Title
PAN-OS: Firewall Denial of Service (DoS) Using Specially Crafted Packets
Summary
A denial-of-service (DoS) vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to reboot a firewall by sending a specially crafted packet through the dataplane. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode.
This issue is applicable to the PAN-OS software versions listed below on PA-Series firewalls, VM-Series firewalls, and Prisma® Access software. This issue does not affect Cloud NGFW.
We have successfully completed the Prisma Access upgrade for all customers, with the exception of those facing issues such as conflicting maintenance windows. Remaining customers will be promptly scheduled for an upgrade through our standard upgrade process.
Severity ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Palo Alto Networks | Cloud NGFW |
Unaffected:
All
(custom)
|
||||||||||||
|
||||||||||||||
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{
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"lang": "eng",
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"type": "text/html",
"value": "This issue is only applicable to firewalls where URL\u0026nbsp;proxy or any decrypt-policy is configured.\u003cbr\u003e\u003cbr\u003eWhen any decrypt policy is configured, this issue may be encountered regardless of whether traffic matches explicit decrypt, explicit no-decrypt, or none of the decryption policies."
}
],
"value": "This issue is only applicable to firewalls where URL\u00a0proxy or any decrypt-policy is configured.\n\nWhen any decrypt policy is configured, this issue may be encountered regardless of whether traffic matches explicit decrypt, explicit no-decrypt, or none of the decryption policies."
}
],
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"versionEndExcluding": "10.2.7-h24",
"versionStartIncluding": "10.2.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.2.7-h11",
"versionStartIncluding": "10.2.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:palo_alto_networks:prisma_access:*:*:*:*:*:PAN-OS:*:*",
"versionEndExcluding": "11.2.4-h4",
"versionStartIncluding": "11.2.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:palo_alto_networks:prisma_access:*:*:*:*:*:PAN-OS:*:*",
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"versionStartIncluding": "10.2.10",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"datePublic": "2025-11-12T17:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
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"value": "A denial-of-service (DoS) vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to reboot a firewall by sending a specially crafted packet through the dataplane. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode.\u003cbr\u003e\u003cbr\u003eThis issue is applicable to the PAN-OS software versions listed below on PA-Series firewalls, VM-Series firewalls, and Prisma\u00ae Access software. This issue does not affect Cloud NGFW.\u003cbr\u003e\u003cbr\u003e\u200b\u200bWe have successfully completed the Prisma Access upgrade for all customers, with the exception of those facing issues such as conflicting maintenance windows. Remaining customers will be promptly scheduled for an upgrade through our standard upgrade process."
}
],
"value": "A denial-of-service (DoS) vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to reboot a firewall by sending a specially crafted packet through the dataplane. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode.\n\nThis issue is applicable to the PAN-OS software versions listed below on PA-Series firewalls, VM-Series firewalls, and Prisma\u00ae Access software. This issue does not affect Cloud NGFW.\n\n\u200b\u200bWe have successfully completed the Prisma Access upgrade for all customers, with the exception of those facing issues such as conflicting maintenance windows. Remaining customers will be promptly scheduled for an upgrade through our standard upgrade process."
}
],
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}
],
"impacts": [
{
"capecId": "CAPEC-129",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-129: Pointer Manipulation"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "YES",
"Recovery": "USER",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 6.6,
"baseSeverity": "MEDIUM",
"exploitMaturity": "UNREPORTED",
"privilegesRequired": "NONE",
"providerUrgency": "AMBER",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "CONCENTRATED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U/V:C/RE:M/U:Amber",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "MODERATE"
},
"format": "CVSS",
"scenarios": [
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"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-754",
"description": "CWE-754 Improper Check for Unusual or Exceptional Conditions",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-11-14T13:48:54.807Z",
"orgId": "d6c1279f-00f6-4ef7-9217-f89ffe703ec0",
"shortName": "palo_alto"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://security.paloaltonetworks.com/CVE-2025-4619"
}
],
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}
],
"source": {
"defect": [
"PAN-247099"
],
"discovery": "USER"
},
"timeline": [
{
"lang": "en",
"time": "2025-11-12T17:00:00.000Z",
"value": "Initial publication"
}
],
"title": "PAN-OS: Firewall Denial of Service (DoS) Using Specially Crafted Packets",
"workarounds": [
{
"lang": "eng",
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"PAN-OS 11.2.4-h2",
"PAN-OS 11.2.4-h1",
"PAN-OS 11.2.4",
"PAN-OS 11.2.3-h5",
"PAN-OS 11.2.3-h4",
"PAN-OS 11.2.3-h3",
"PAN-OS 11.2.3-h2",
"PAN-OS 11.2.3-h1",
"PAN-OS 11.2.3",
"PAN-OS 11.2.2-h1",
"PAN-OS 11.2.2",
"PAN-OS 11.2.1-h1",
"PAN-OS 11.2.1",
"PAN-OS 11.2.0-h1",
"PAN-OS 11.2.0",
"PAN-OS 11.1.6",
"PAN-OS 11.1.5-h1",
"PAN-OS 11.1.5",
"PAN-OS 11.1.4-h12",
"PAN-OS 11.1.4-h11",
"PAN-OS 11.1.4-h10",
"PAN-OS 11.1.4-h9",
"PAN-OS 11.1.4-h8",
"PAN-OS 11.1.4-h7",
"PAN-OS 11.1.4-h6",
"PAN-OS 11.1.4-h5",
"PAN-OS 11.1.3-h13",
"PAN-OS 11.1.3-h12",
"PAN-OS 11.1.3-h11",
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"PAN-OS 11.1.3-h9",
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"PAN-OS 10.2.11-h7",
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"PAN-OS 10.2.10-h4",
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"PAN-OS 10.2.9-h9",
"PAN-OS 10.2.9-h8",
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CVE-2016-5195 (GCVE-0-2016-5195)
Vulnerability from – Published: 2016-11-10 21:00 – Updated: 2025-11-04 16:09
VLAI?
Summary
Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."
Severity ?
CWE
- n/a
Assigner
References
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CVE-2017-15944 (GCVE-0-2017-15944)
Vulnerability from – Published: 2017-12-11 17:00 – Updated: 2025-10-21 23:45
VLAI?
Summary
Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to execute arbitrary code via vectors involving the management interface.
Severity ?
9.8 (Critical)
CWE
- n/a
Assigner
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CVE-2019-1579 (GCVE-0-2019-1579)
Vulnerability from – Published: 2019-07-19 21:12 – Updated: 2025-10-21 23:45
VLAI?
Summary
Remote Code Execution in PAN-OS 7.1.18 and earlier, PAN-OS 8.0.11-h1 and earlier, and PAN-OS 8.1.2 and earlier with GlobalProtect Portal or GlobalProtect Gateway Interface enabled may allow an unauthenticated remote attacker to execute arbitrary code.
Severity ?
8.1 (High)
CWE
- Remote Code Execution
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Palo Alto Networks GlobalProtect Portal/Gateway Interface |
Affected:
PAN-OS 7.1.18 and earlier, PAN-OS 8.0.11 and earlier, and PAN-OS 8.1.2 and earlier releases
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CVE-2020-2021 (GCVE-0-2020-2021)
Vulnerability from – Published: 2020-06-29 15:10 – Updated: 2025-10-21 23:35
VLAI?
Title
PAN-OS: Authentication Bypass in SAML Authentication
Summary
When Security Assertion Markup Language (SAML) authentication is enabled and the 'Validate Identity Provider Certificate' option is disabled (unchecked), improper verification of signatures in PAN-OS SAML authentication enables an unauthenticated network-based attacker to access protected resources. The attacker must have network access to the vulnerable server to exploit this vulnerability. This issue affects PAN-OS 9.1 versions earlier than PAN-OS 9.1.3; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 8.1 versions earlier than PAN-OS 8.1.15, and all versions of PAN-OS 8.0 (EOL). This issue does not affect PAN-OS 7.1. This issue cannot be exploited if SAML is not used for authentication. This issue cannot be exploited if the 'Validate Identity Provider Certificate' option is enabled (checked) in the SAML Identity Provider Server Profile. Resources that can be protected by SAML-based single sign-on (SSO) authentication are: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN, Authentication and Captive Portal, PAN-OS next-generation firewalls (PA-Series, VM-Series) and Panorama web interfaces, Prisma Access In the case of GlobalProtect Gateways, GlobalProtect Portal, Clientless VPN, Captive Portal, and Prisma Access, an unauthenticated attacker with network access to the affected servers can gain access to protected resources if allowed by configured authentication and Security policies. There is no impact on the integrity and availability of the gateway, portal or VPN server. An attacker cannot inspect or tamper with sessions of regular users. In the worst case, this is a critical severity vulnerability with a CVSS Base Score of 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N). In the case of PAN-OS and Panorama web interfaces, this issue allows an unauthenticated attacker with network access to the PAN-OS or Panorama web interfaces to log in as an administrator and perform administrative actions. In the worst-case scenario, this is a critical severity vulnerability with a CVSS Base Score of 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). If the web interfaces are only accessible to a restricted management network, then the issue is lowered to a CVSS Base Score of 9.6 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). Palo Alto Networks is not aware of any malicious attempts to exploit this vulnerability.
Severity ?
10 (Critical)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Palo Alto Networks | PAN-OS |
Unaffected:
7.1.*
Affected: 8.0.* Affected: 8.1 , < 8.1.15 (custom) Affected: 9.0 , < 9.0.9 (custom) Affected: 9.1 , < 9.1.3 (custom) |
Credits
Palo Alto Networks thanks Salman Khan from the Cyber Risk and Resilience Team and Cameron Duck from the Identity Services Team at Monash University for discovering and reporting this issue.
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CVE-2020-2021 (GCVE-0-2020-2021)
Vulnerability from – Published: 2020-06-29 15:10 – Updated: 2025-10-21 23:35
VLAI?
Title
PAN-OS: Authentication Bypass in SAML Authentication
Summary
When Security Assertion Markup Language (SAML) authentication is enabled and the 'Validate Identity Provider Certificate' option is disabled (unchecked), improper verification of signatures in PAN-OS SAML authentication enables an unauthenticated network-based attacker to access protected resources. The attacker must have network access to the vulnerable server to exploit this vulnerability. This issue affects PAN-OS 9.1 versions earlier than PAN-OS 9.1.3; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 8.1 versions earlier than PAN-OS 8.1.15, and all versions of PAN-OS 8.0 (EOL). This issue does not affect PAN-OS 7.1. This issue cannot be exploited if SAML is not used for authentication. This issue cannot be exploited if the 'Validate Identity Provider Certificate' option is enabled (checked) in the SAML Identity Provider Server Profile. Resources that can be protected by SAML-based single sign-on (SSO) authentication are: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN, Authentication and Captive Portal, PAN-OS next-generation firewalls (PA-Series, VM-Series) and Panorama web interfaces, Prisma Access In the case of GlobalProtect Gateways, GlobalProtect Portal, Clientless VPN, Captive Portal, and Prisma Access, an unauthenticated attacker with network access to the affected servers can gain access to protected resources if allowed by configured authentication and Security policies. There is no impact on the integrity and availability of the gateway, portal or VPN server. An attacker cannot inspect or tamper with sessions of regular users. In the worst case, this is a critical severity vulnerability with a CVSS Base Score of 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N). In the case of PAN-OS and Panorama web interfaces, this issue allows an unauthenticated attacker with network access to the PAN-OS or Panorama web interfaces to log in as an administrator and perform administrative actions. In the worst-case scenario, this is a critical severity vulnerability with a CVSS Base Score of 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). If the web interfaces are only accessible to a restricted management network, then the issue is lowered to a CVSS Base Score of 9.6 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). Palo Alto Networks is not aware of any malicious attempts to exploit this vulnerability.
Severity ?
10 (Critical)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Palo Alto Networks | PAN-OS |
Unaffected:
7.1.*
Affected: 8.0.* Affected: 8.1 , < 8.1.15 (custom) Affected: 9.0 , < 9.0.9 (custom) Affected: 9.1 , < 9.1.3 (custom) |
Credits
Palo Alto Networks thanks Salman Khan from the Cyber Risk and Resilience Team and Cameron Duck from the Identity Services Team at Monash University for discovering and reporting this issue.
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"title": "CISA ADP Vulnrichment"
}
],
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{
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"configurations": [
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"lang": "en",
"value": "This issue is applicable only where SAML authentication is enabled and the \u0027Validate Identity Provider Certificate\u0027 option is disabled (unchecked) in the SAML Identity Provider Server Profile.\nThis issue cannot be exploited if SAML is not used for authentication.\nThis issue cannot be exploited if the \u0027Validate Identity Provider Certificate\u0027 option is enabled in the SAML Identity Provider Server Profile.\nDetailed descriptions of how to check for the configuration required for exposure and mitigate them are listed in the knowledge base article https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u0000008UXK.\nTo check whether SAML authentication is enabled on a firewall, see the configuration under Device \u003e Server Profiles \u003e SAML Identity Provider.\nTo check whether SAML authentication is enabled for Panorama administrator authentication, see the configuration under Panorama\u003e Server Profiles \u003e SAML Identity Provider\nTo check whether SAML authentication is enabled for firewalls managed by Panorama, see the configuration under Device \u003e [template]\u003e Server Profiles \u003e SAML Identity Provider.\nAny unauthorized access is logged in the system logs based on the configuration; however, it can be difficult to distinguish between valid and malicious logins or sessions."
}
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}
],
"datePublic": "2020-06-29T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "When Security Assertion Markup Language (SAML) authentication is enabled and the \u0027Validate Identity Provider Certificate\u0027 option is disabled (unchecked), improper verification of signatures in PAN-OS SAML authentication enables an unauthenticated network-based attacker to access protected resources. The attacker must have network access to the vulnerable server to exploit this vulnerability. This issue affects PAN-OS 9.1 versions earlier than PAN-OS 9.1.3; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 8.1 versions earlier than PAN-OS 8.1.15, and all versions of PAN-OS 8.0 (EOL). This issue does not affect PAN-OS 7.1. This issue cannot be exploited if SAML is not used for authentication. This issue cannot be exploited if the \u0027Validate Identity Provider Certificate\u0027 option is enabled (checked) in the SAML Identity Provider Server Profile. Resources that can be protected by SAML-based single sign-on (SSO) authentication are: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN, Authentication and Captive Portal, PAN-OS next-generation firewalls (PA-Series, VM-Series) and Panorama web interfaces, Prisma Access In the case of GlobalProtect Gateways, GlobalProtect Portal, Clientless VPN, Captive Portal, and Prisma Access, an unauthenticated attacker with network access to the affected servers can gain access to protected resources if allowed by configured authentication and Security policies. There is no impact on the integrity and availability of the gateway, portal or VPN server. An attacker cannot inspect or tamper with sessions of regular users. In the worst case, this is a critical severity vulnerability with a CVSS Base Score of 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N). In the case of PAN-OS and Panorama web interfaces, this issue allows an unauthenticated attacker with network access to the PAN-OS or Panorama web interfaces to log in as an administrator and perform administrative actions. In the worst-case scenario, this is a critical severity vulnerability with a CVSS Base Score of 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). If the web interfaces are only accessible to a restricted management network, then the issue is lowered to a CVSS Base Score of 9.6 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). Palo Alto Networks is not aware of any malicious attempts to exploit this vulnerability."
}
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"value": "This issue is fixed in PAN-OS 8.1.15, PAN-OS 9.0.9, PAN-OS 9.1.3, and all later versions.\n\nImportant: Ensure that the signing certificate for your SAML Identity Provider is configured as the \u0027Identity Provider Certificate\u0027 before you upgrade to a fixed version to ensure that your users can continue to authenticate successfully. Configuring the \u0027Identity Provider Certificate\u0027 is an essential part of a secure SAML authentication configuration. https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-admin/authentication/configure-saml-authentication\n\nDetails of all actions required before and after upgrading PAN-OS are available in https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u0000008UXK. \n\nTo eliminate unauthorized sessions on GlobalProtect portals and gateways, Prisma Access managed through Panorama, change the certificate used to encrypt and decrypt the Authentication Override cookie on the GlobalProtect portal and gateways using the Panorama or firewall web interface. Refer to this article for configuring Authentication override cookies: https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u0000008UXy\n\nRestarting firewalls and Panorama eliminates any unauthorized sessions on the web interface.\nTo clear any unauthorized user sessions in Captive Portal take the following steps: \nRun the following command \n show user ip-user-mapping all type SSO\nFor all the IPs returned, run these two commands to clear the users:\n clear user-cache-mp \u003cabove ips\u003e\n clear user-cache \u003cabove ips\u003e\nPAN-OS 8.0 is end-of-life (as of October 31, 2019) and is no longer covered by our Product Security Assurance policies.\nAll Prisma Access services have been upgraded to resolve this issue and are no longer vulnerable. Prisma Access customers do not require any changes to SAML or IdP configurations."
}
],
"source": {
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],
"discovery": "EXTERNAL"
},
"timeline": [
{
"lang": "en",
"time": "2020-06-29T00:00:00",
"value": "Initial publication"
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"title": "PAN-OS: Authentication Bypass in SAML Authentication",
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"value": "Using a different authentication method and disabling SAML authentication will completely mitigate the issue.\nUntil an upgrade can be performed, applying both these mitigations (a) and (b) eliminates the configuration required for exposure to this vulnerability:\n\n(a) Ensure that the \u0027Identity Provider Certificate\u0027 is configured. Configuring the \u0027Identity Provider Certificate\u0027 is an essential part of a secure SAML authentication configuration.\n\n(b) If the identity provider (IdP) certificate is a certificate authority (CA) signed certificate, then ensure that the \u0027Validate Identity Provider Certificate\u0027 option is enabled in the SAML Identity Provider Server Profile. Many popular IdPs generate self-signed IdP certificates by default and the \u0027Validate Identity Provider Certificate\u0027 option cannot be enabled. Additional steps may be required to use a certificate signed by a CA. This certificate can be signed by an internal enterprise CA, the CA on the PAN-OS, or a public CA. Instructions to configure a CA-issued certificate on IdPs are available at https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u0000008UXP.\n\nUpgrading to a fixed version of PAN-OS software prevents any future configuration changes related to SAML that inadvertently expose protected services to attacks."
}
],
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"value": "This issue is applicable only where SAML authentication is enabled and the \u0027Validate Identity Provider Certificate\u0027 option is disabled (unchecked) in the SAML Identity Provider Server Profile.\nThis issue cannot be exploited if SAML is not used for authentication.\nThis issue cannot be exploited if the \u0027Validate Identity Provider Certificate\u0027 option is enabled in the SAML Identity Provider Server Profile.\nDetailed descriptions of how to check for the configuration required for exposure and mitigate them are listed in the knowledge base article https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u0000008UXK.\nTo check whether SAML authentication is enabled on a firewall, see the configuration under Device \u003e Server Profiles \u003e SAML Identity Provider.\nTo check whether SAML authentication is enabled for Panorama administrator authentication, see the configuration under Panorama\u003e Server Profiles \u003e SAML Identity Provider\nTo check whether SAML authentication is enabled for firewalls managed by Panorama, see the configuration under Device \u003e [template]\u003e Server Profiles \u003e SAML Identity Provider.\nAny unauthorized access is logged in the system logs based on the configuration; however, it can be difficult to distinguish between valid and malicious logins or sessions."
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"value": "When Security Assertion Markup Language (SAML) authentication is enabled and the \u0027Validate Identity Provider Certificate\u0027 option is disabled (unchecked), improper verification of signatures in PAN-OS SAML authentication enables an unauthenticated network-based attacker to access protected resources. The attacker must have network access to the vulnerable server to exploit this vulnerability. This issue affects PAN-OS 9.1 versions earlier than PAN-OS 9.1.3; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 8.1 versions earlier than PAN-OS 8.1.15, and all versions of PAN-OS 8.0 (EOL). This issue does not affect PAN-OS 7.1. This issue cannot be exploited if SAML is not used for authentication. This issue cannot be exploited if the \u0027Validate Identity Provider Certificate\u0027 option is enabled (checked) in the SAML Identity Provider Server Profile. Resources that can be protected by SAML-based single sign-on (SSO) authentication are: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN, Authentication and Captive Portal, PAN-OS next-generation firewalls (PA-Series, VM-Series) and Panorama web interfaces, Prisma Access In the case of GlobalProtect Gateways, GlobalProtect Portal, Clientless VPN, Captive Portal, and Prisma Access, an unauthenticated attacker with network access to the affected servers can gain access to protected resources if allowed by configured authentication and Security policies. There is no impact on the integrity and availability of the gateway, portal or VPN server. An attacker cannot inspect or tamper with sessions of regular users. In the worst case, this is a critical severity vulnerability with a CVSS Base Score of 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N). In the case of PAN-OS and Panorama web interfaces, this issue allows an unauthenticated attacker with network access to the PAN-OS or Panorama web interfaces to log in as an administrator and perform administrative actions. In the worst-case scenario, this is a critical severity vulnerability with a CVSS Base Score of 10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). If the web interfaces are only accessible to a restricted management network, then the issue is lowered to a CVSS Base Score of 9.6 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). Palo Alto Networks is not aware of any malicious attempts to exploit this vulnerability."
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{
"lang": "en",
"value": "This issue is fixed in PAN-OS 8.1.15, PAN-OS 9.0.9, PAN-OS 9.1.3, and all later versions.\n\nImportant: Ensure that the signing certificate for your SAML Identity Provider is configured as the \u0027Identity Provider Certificate\u0027 before you upgrade to a fixed version to ensure that your users can continue to authenticate successfully. Configuring the \u0027Identity Provider Certificate\u0027 is an essential part of a secure SAML authentication configuration. https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-admin/authentication/configure-saml-authentication\n\nDetails of all actions required before and after upgrading PAN-OS are available in https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u0000008UXK. \n\nTo eliminate unauthorized sessions on GlobalProtect portals and gateways, Prisma Access managed through Panorama, change the certificate used to encrypt and decrypt the Authentication Override cookie on the GlobalProtect portal and gateways using the Panorama or firewall web interface. Refer to this article for configuring Authentication override cookies: https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u0000008UXy\n\nRestarting firewalls and Panorama eliminates any unauthorized sessions on the web interface.\nTo clear any unauthorized user sessions in Captive Portal take the following steps: \nRun the following command \n show user ip-user-mapping all type SSO\nFor all the IPs returned, run these two commands to clear the users:\n clear user-cache-mp \u003cabove ips\u003e\n clear user-cache \u003cabove ips\u003e\nPAN-OS 8.0 is end-of-life (as of October 31, 2019) and is no longer covered by our Product Security Assurance policies.\nAll Prisma Access services have been upgraded to resolve this issue and are no longer vulnerable. Prisma Access customers do not require any changes to SAML or IdP configurations."
}
],
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],
"discovery": "EXTERNAL"
},
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"time": "2020-06-29T00:00:00",
"value": "Initial publication"
}
],
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{
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"value": "Using a different authentication method and disabling SAML authentication will completely mitigate the issue.\nUntil an upgrade can be performed, applying both these mitigations (a) and (b) eliminates the configuration required for exposure to this vulnerability:\n\n(a) Ensure that the \u0027Identity Provider Certificate\u0027 is configured. Configuring the \u0027Identity Provider Certificate\u0027 is an essential part of a secure SAML authentication configuration.\n\n(b) If the identity provider (IdP) certificate is a certificate authority (CA) signed certificate, then ensure that the \u0027Validate Identity Provider Certificate\u0027 option is enabled in the SAML Identity Provider Server Profile. Many popular IdPs generate self-signed IdP certificates by default and the \u0027Validate Identity Provider Certificate\u0027 option cannot be enabled. Additional steps may be required to use a certificate signed by a CA. This certificate can be signed by an internal enterprise CA, the CA on the PAN-OS, or a public CA. Instructions to configure a CA-issued certificate on IdPs are available at https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u0000008UXP.\n\nUpgrading to a fixed version of PAN-OS software prevents any future configuration changes related to SAML that inadvertently expose protected services to attacks."
}
]
}
}
},
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"datePublished": "2020-06-29T15:10:11.350Z",
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"dateUpdated": "2025-10-21T23:35:41.842Z",
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}
displaying 1 - 10 organizations in total 370