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PAN-OS

Palo Alto Networks PAN-OS 12.1

Vulnerabilities, fixed releases, vendor recommendation and support status of the 12.1 branch, from official sources.

Sources last modified 11 Aug 2026 · Last verified by Patcharo: 1 Oct 2026 at 09:32 UTC

18
Matched CVEs

including 6 critical

2
CISA KEV
12.1.8
Newest fix stated
Supported · 28 Aug 2028
Support

In brief

Recommended maintenance build
No official recommendation
Recommended release
No official recommendation
Releases listed by the vendor
No release list read from the vendor
CERT-FR
5 documents

Vulnerabilities affecting 12.1

Each record matched to this branch with the fixed release the source states, newest first.

  1. CVE-2026-0280

    PAN-OS: IPv6 Firewall Policy Bypass

    High7.2CVSS 3.1, High
    First fixed release12.1.4-h8, 12.1.7-h2, 12.1.8
    Published
  2. CVE-2026-0281

    PAN-OS: Information Disclosure Vulnerability in Management Web Interface

    High7.1CVSS 3.1, High
    First fixed release12.1.8
    Published
  3. CVE-2026-0283

    PAN-OS: Authentication Bypass Vulnerability in Large Scale VPN (LSVPN)

    High7.2CVSS 3.1, High
    First fixed release12.1.4-h8, 12.1.7-h2, 12.1.8
    Published
  4. CVE-2026-0284

    PAN-OS: XML Injection Vulnerability in Large Scale VPN (LSVPN)

    Critical9.9CVSS 3.1, Critical
    First fixed release12.1.4-h8, 12.1.7-h2, 12.1.8
    Published
  5. CVE-2026-0286

    PAN-OS: Authenticated Command Injection in CLI

    High7.2CVSS 3.1, High
    First fixed release12.1.4-h8, 12.1.7-h2, 12.1.8
    Published
  6. CVE-2026-0287

    PAN-OS: Denial of Service Vulnerabilities in Network Traffic Processing

    High7.5CVSS 3.1, High
    First fixed release12.1.4-h8, 12.1.7-h2, 12.1.8
    Published
  7. CVE-2026-0288

    PAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server Agent

    High7.5CVSS 3.1, High
    First fixed release12.1.4-h8, 12.1.7-h2, 12.1.8
    Published
  8. CVE-2026-0273

    PAN-OS: Authenticated Admin Command Injection Vulnerability via CLI or Web UI

    High7.2CVSS 3.1, High
    First fixed release12.1.4-h7, 12.1.7
    Published
  9. CVE-2026-0272

    PAN-OS: Privilege Escalation (PE) Vulnerability in the Command Line Interface (CLI)

    High7.2CVSS 3.1, High
    First fixed release12.1.4-h7, 12.1.5
    Published
  10. CVE-2026-0257KEVRansomware

    PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

    Critical9.1CVSS 3.1, Critical
    First fixed release12.1.4-h6, 12.1.7
    Published
  11. CVE-2026-0258

    PAN-OS: Server-Side Request Forgery (SSRF) in IKEv2 Certificate URL Fetching

    Critical9.1CVSS 3.1, Critical
    First fixed release12.1.4-h5, 12.1.7
    Published
  12. CVE-2026-0261

    PAN-OS: Authenticated Admin Command Injection Vulnerability

    High7.2CVSS 3.1, High
    First fixed release12.1.4-h5, 12.1.7
    Published
  13. CVE-2026-0262

    PAN-OS: Denial of Service Vulnerabilities in Network Traffic Parsing

    High7.5CVSS 3.1, High
    First fixed release12.1.4-h5, 12.1.7
    Published
  14. CVE-2026-0263

    PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing

    Critical9.8CVSS 3.1, Critical
    First fixed release12.1.4-h5, 12.1.7
    Published
  15. CVE-2026-0264

    PAN-OS: Heap-Based Buffer Overflow in DNS Proxy and DNS Server Allows Unauthenticated Remote Code Execution

    Critical9.8CVSS 3.1, Critical
    First fixed release12.1.4-h5, 12.1.7
    Published
  16. CVE-2026-0265

    PAN-OS: Authentication Bypass with Cloud Authentication Service (CAS) enabled

    High8.1CVSS 3.1, High
    First fixed release12.1.4-h5, 12.1.7
    Published
  17. CVE-2026-0300KEV

    PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal

    Critical9.8CVSS 3.1, Critical
    First fixed release12.1.4-h5, 12.1.7
    Published
  18. CVE-2026-0227

    PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal

    High7.5CVSS 3.1, High
    First fixed release12.1.3-h3, 12.1.4
    Published

Vendor recommendation

The vendor's own statement about what to run, with its date and source. Separate from vulnerabilities and from support status: being behind a recommendation is not a vulnerability, and a supported release is not necessarily the recommended one.

Palo Alto Networks publishes no recommended-release page Patcharo can read. The fixed releases on this site come from the security advisories only; nothing is inferred from version numbers.

Support status

From the vendor's published life-cycle policy; support is not a recommendation.

  1. 12.1
    SupportSupported
    End of support28 Aug 2028

Palo Alto Networks End-of-Life Summary · retrieved 1 Oct 2026 at 13:38 UTC

CERT-FR advisories and alerts

Documents of the French national CERT referencing these CVEs, newest first.

  • Advisory (AVI)CERTFR-2026-AVI-0853Multiple vulnerabilities in Palo Alto Networks productsPublished 9 Jul 2026
  • Advisory (AVI)CERTFR-2026-AVI-0734Multiple vulnerabilities in Palo Alto Networks productsPublished 11 Jun 2026
  • Advisory (AVI)CERTFR-2026-AVI-0596Multiple vulnerabilities in Palo Alto Networks productsPublished 15 May 2026
  • Advisory (AVI)CERTFR-2026-AVI-0537Vulnerability in Palo Alto Networks User-ID Authentication PortalPublished 6 May 2026
  • Advisory (AVI)CERTFR-2026-AVI-0049Multiple vulnerabilities in Palo Alto Networks productsPublished 15 Jan 2026

Some titles in this list are machine-translated by artificial intelligence (Mistral AI) from the source texts; each record shows the original.

How Patcharo reads this

Affected and fixed releases come from the vendor's structured statements, matched by exact version and patch level. The recommendation is the vendor's own statement; the support status comes from its life-cycle policy. Unknown never becomes Not affected.

Read the methodologyRead the guide: PAN-OS versions explained: release lines, maintenance releases and the -h1, -h2, -h3 suffixes

Other PAN-OS branches

All PAN-OS vulnerabilities and branches

Official sources