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CVE-2026-0283 — PAN-OS: Authentication Bypass Vulnerability in Large Scale VPN (LSVPN)

CVE-2026-0283 · PAN-OS · CVSS 7.2

In brief

Severity · CVSS
High7.2CVSS 3.1, High
EPSS
0.38%
CISA KEV
Not listed
Products
PAN-OS
Published · Modified
·
Last verified

Summary

An authentication bypass vulnerability in Large Scale VPN ( LSVPN) functionality of Palo Alto Networks PAN-OS software allows an attacker with network access to bypass security restrictions and establish an unauthorized site-to-site VPN connection. Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.

Weakness: CWE-306

Title, description and the vendor's statements are quoted from the CVE record; a vendor's advisory is summarised in Patcharo's words, with a link.

Affected and fixed versions

Per product and release branch, as the vendor's CVE record and official advisory state them. A fixed release is shown only when a document names it: the vendor's, or CERT-FR's for Check Point, with its source.

4 branches with a published fixed release

Palo Alto Networks PAN-OS

Source: CVE-2026-0283

  1. 12.1
    Affected versions>= 12.1.0, < 12.1.4-h8>= 12.1.5, < 12.1.7-h2
    First fixed release12.1.4-h812.1.7-h212.1.8
  2. 11.2Approaching end of support
    Affected versions>= 11.2.0, < 11.2.4-h20>= 11.2.5, < 11.2.7-h18>= 11.2.8, < 11.2.10-h12>= 11.2.11, < 11.2.13
    First fixed release11.2.4-h2011.2.7-h1811.2.10-h1211.2.13
  3. 11.1Approaching end of support
    Affected versions>= 11.1.0, < 11.1.4-h35>= 11.1.5, < 11.1.6-h35>= 11.1.7, < 11.1.7-h8>= 11.1.8, < 11.1.10-h30>= 11.1.11, < 11.1.13-h9>= 11.1.14, < 11.1.16
    First fixed release11.1.4-h3511.1.6-h3511.1.7-h811.1.10-h3011.1.13-h911.1.16
  4. 10.2End of life
    Affected versions>= 10.2.0, < 10.2.7-h36>= 10.2.8, < 10.2.10-h39>= 10.2.11, < 10.2.13-h23>= 10.2.14, < 10.2.16-h9>= 10.2.17, < 10.2.18-h8
    First fixed release10.2.7-h3610.2.10-h3910.2.13-h2310.2.16-h910.2.18-h8

Releases the vendor does not list are not affected.

Remediation

Fix available

Vendor fix

  • PAN-OS 12.112.1.4-h8, 12.1.7-h2, 12.1.8
  • PAN-OS 11.211.2.4-h20, 11.2.7-h18, 11.2.10-h12, 11.2.13
  • PAN-OS 11.111.1.4-h35, 11.1.6-h35, 11.1.7-h8, 11.1.10-h30, 11.1.13-h9, 11.1.16
  • PAN-OS 10.210.2.7-h36, 10.2.10-h39, 10.2.13-h23, 10.2.16-h9, 10.2.18-h8

Upgrade to a fixed release listed above for your branch, or to a later fixed release the vendor explicitly supports.

Version Minor Version Suggested Solution Cloud NGFW All No action needed. PAN-OS 12.1 12.1.5 through 12.1.7-h* Upgrade to 12.1.7-h2 or 12.1.8 or later. 12.1.2 through 12.1.4-h* Upgrade to 12.1.4-h8 or 12.1.8 or later. PAN-OS 11.2 11.2.11 through 11.2.12 Upgrade to 11.2.13 or later.

Full text

11.2.8 through 11.2.10-h* Upgrade to 11.2.10-h12 or 11.2.13 or later. 11.2.5 through 11.2.7-h* Upgrade to 11.2.7-h18 or 11.2.13 or later. 11.2.0 through 11.2.4-h* Upgrade to 11.2.4-h20 or 11.2.13 or later. PAN-OS 11.1 11.1.14 through 11.1.15 Upgrade to 11.1.16 or later. 11.1.11 through 11.1.13-h* Upgrade to 11.1.13-h9 or 11.1.16 or later. 11.1.8 through 11.1.10-h* Upgrade to 11.1.10-h30 or 11.1.16 or later. 11.1.7 through 11.1.7-h* Upgrade to 11.1.7-h8 or 11.1.16 or later. 11.1.5 through 11.1.6-h* Upgrade to 11.1.6-h35 or 11.1.16 or later. 11.1.0 through 11.1.4-h* Upgrade to 11.1.4-h35 or 11.1.16 or later. PA…

SourcePalo Alto Networks (CVE record)

Mitigation (vendor)

Customers with a Threat Prevention subscription are provided with limited coverage against this vulnerability when enabling Threat ID 510032 (from Applications and Threats content version 9122-10145 and later).

Full text

To ensure the Threat ID provides effective protection against this vulnerability, ensure that vulnerability protection security profile is applied to your GlobalProtect interface https://live.paloaltonetworks.com/t5/globalprotect-articles/applying-vulnerability-protection-to-globalprotect-interfaces/ta-p/340184 .

SourcePalo Alto Networks (CVE record)

CERT-FR recommendation

Refer to the vendor's security bulletin to obtain patches (see Documentation section).

SourceCERTFR-2026-AVI-0853

Last verified 1 Oct 2026 at 09:32 UTC

Known exploitation

Not listed in CISA KEV as of the last check.

0.38% probability of exploitation in the next 30 days (percentile 29%).

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

CERT-FR

1 document of the French national CERT (ANSSI) references this CVE.

Advisory (AVI)CERTFR-2026-AVI-0853Published 9 Jul 2026

Multiple vulnerabilities in Palo Alto Networks products

Remote denial of serviceRemote cross-site scripting (XSS)Remote arbitrary code executionData integrity breachNot specified by the vendorServer-side request forgery (SSRF)Security policy bypassData confidentiality breachPrivilege escalation

Summary

Multiple vulnerabilities have been discovered in Palo Alto Networks products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation, and remote denial of service.

Recommendation

Refer to the vendor's security bulletin to obtain patches (see Documentation section).

Official document on cert.ssi.gouv.frread by Patcharo 28 Sept 2026 at 20:03 UTCMachine translation of the French text published by CERT-FR; a text whose translation did not pass Patcharo's checks stays in French. Identifiers, versions and links are copied unchanged.

Timeline

  1. Published by the source
  2. Source record last modified
  3. EPSS score computed
  4. Last verified by Patcharo

Official sources

Vendor advisory

References

Palo Alto Networks · NVD · FIRST EPSS

How Patcharo reads this

Affected and fixed releases come from the vendor's structured statements and are matched against exact versions; CVSS from NVD, exploitation from CISA KEV and the vendor's own advisory, probability from FIRST EPSS. Missing data stays Unknown and never becomes Not affected.

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

Related vulnerabilities

Other records affecting the same products, newest first.

  • CVE-2026-0301PAN-OS: Information Disclosure Vulnerability in URL FilteringHigh
  • CVE-2026-0280PAN-OS: IPv6 Firewall Policy BypassHigh
  • CVE-2026-0281PAN-OS: Information Disclosure Vulnerability in Management Web InterfaceHigh
  • CVE-2026-0284PAN-OS: XML Injection Vulnerability in Large Scale VPN (LSVPN)Critical
  • CVE-2026-0286PAN-OS: Authenticated Command Injection in CLIHigh

All PAN-OS vulnerabilitiesAll Palo Alto Networks vulnerabilities