Medium6.3Vendor: LowPalo Alto Networks

Medium [CVE-2026-0280] PAN-OS: IPv6 Firewall Policy Bypass

This medium-severity Palo Alto Networks advisory covers CVE-2026-0280 affecting PAN-OS, Prisma Access.

CVE-2026-0280 Published Jul 8, 2026

CVE-2026-0280

Affected products & platforms

Palo Alto NetworksPAN-OSFirewallPrisma AccessPAN-OS / Panorama

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Summary

CVE-2026-0280 PAN-OS: IPv6 Firewall Policy Bypass

Affected products named by the advisory: Prisma Access.

Affected versions

PAN-OS < 12.1.8
PAN-OS < 11.2.13
PAN-OS < 11.1.16
PAN-OS < 10.2.18-h8
Prisma Access < 11.2.7-h18
Prisma Access < 10.2.10-h39

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Fixed versions

PAN-OS >= 12.1.8
PAN-OS >= 12.1.7-h2
PAN-OS >= 12.1.4-h8
PAN-OS >= 11.2.13
PAN-OS >= 11.2.10-h11
PAN-OS >= 11.2.7-h18
PAN-OS >= 11.2.4-h20
PAN-OS >= 11.1.16
PAN-OS >= 11.1.13-h9
PAN-OS >= 11.1.10-h30
PAN-OS >= 11.1.7-h8
PAN-OS >= 11.1.6-h35
PAN-OS >= 11.1.4-h35
PAN-OS >= 10.2.18-h8
PAN-OS >= 10.2.16-h9
PAN-OS >= 10.2.13-h23
PAN-OS >= 10.2.10-h39
PAN-OS >= 10.2.7-h36
Prisma Access >= 11.2.7-h18
Prisma Access >= 10.2.10-h39

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

VersionMinor VersionSuggested SolutionCloud NGFWNo 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.

Temporary workarounds

The only way to completely address this vulnerability is to upgrade to a fixed version.
However, if operationally feasible for your environment, risk can be mitigated by enabling the default "Non SYN TCP Reject" setting via the following command:
set deviceconfig setting session tcp-reject-non-syn yes

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Palo Alto Networks Security Advisoriesofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://security.paloaltonetworks.com/rss.xml; this link opens the Palo Alto Networks advisory index instead of the raw feed document.
Palo Alto Networks
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Palo Alto Networks
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-0280NVD CVE.org MITRE

Official resources

PAN-OS / Panorama upgrade guide (target: 12.1.8 / 12.1.7-h2 / 12.1.4-h8)
Official documentation
This advisory names 12.1.8 / 12.1.7-h2 / 12.1.4-h8 as the first fixed releases — official upgrade documentation for PAN-OS firewalls and Panorama.
Prisma Access / Prisma documentation
Official documentation
Official Prisma product documentation for the affected component.
Palo Alto Networks Security Advisories portal
Official documentation
Canonical advisory portal — check here for the latest revision of this advisory and affected-version updates.

Discussion(0)

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