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Advisory severityHigh8.7Vendor: MediumPalo Alto Networks

High [CVE-2026-0321] PAN-OS: Denial of Service (DoS) Vulnerabilities in Network Services

This high-severity Palo Alto Networks advisory covers CVE-2026-0321 affecting PAN-OS, Prisma Access.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-0321 Source published

VulniPulse record published Record updated

CVE-2026-0321
Affected products & platforms
Palo Alto NetworksPAN-OSFirewallPrisma AccessPAN-OS / Panorama
Open source advisory

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Summary

CVE-2026-0321 PAN-OS: Denial of Service (DoS) Vulnerabilities in Network Services

Affected products named by the advisory: Prisma Access.

Affected versions
  • PAN-OS 12.2: < 12.2.4
  • PAN-OS 12.1: < 12.1.4-h12< 12.1.7-h8< 12.1.10-h2
  • PAN-OS 11.2: < 11.2.4-h22< 11.2.7-h21< 11.2.10-h15< 11.2.13-h3< 11.2.16
  • PAN-OS 11.1: < 11.1.4-h37< 11.1.6-h39< 11.1.7-h11< 11.1.10-h35< 11.1.13-h15< 11.1.16-h3
  • PAN-OS 10.2: < 10.2.7-h38< 10.2.10-h41< 10.2.13-h26< 10.2.16-h11< 10.2.18-h12
  • Prisma Access 12.1: < 12.1.7-h8*
  • Prisma Access 11.2: < 11.2.7-h21*
  • Prisma Access 10.2: < 10.2.10-h41*

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

Fixed versions
  • PAN-OS >= 12.2.4
  • PAN-OS >= 12.1.10-h2
  • PAN-OS >= 12.1.7-h8
  • PAN-OS >= 12.1.4-h12
  • PAN-OS >= 11.2.16
  • PAN-OS >= 11.2.13-h3
  • PAN-OS >= 11.2.10-h15
  • PAN-OS >= 11.2.7-h21
  • PAN-OS >= 11.2.4-h22
  • PAN-OS >= 11.1.16-h3
  • PAN-OS >= 11.1.13-h15
  • PAN-OS >= 11.1.10-h35
  • PAN-OS >= 11.1.7-h11
  • PAN-OS >= 11.1.6-h39
  • PAN-OS >= 11.1.4-h37
  • PAN-OS >= 10.2.18-h12
  • PAN-OS >= 10.2.16-h11
  • PAN-OS >= 10.2.13-h26
  • PAN-OS >= 10.2.10-h41
  • PAN-OS >= 10.2.7-h38

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 12.2 12.2.0 through 12.2.3 Upgrade to 12.2.4 or later.
  • PAN-OS 12.1 12.1.8 through 12.1.10-h* Upgrade to 12.1.10-h2 or later. 12.1.5 through 12.1.7-h* Upgrade to 12.1.7-h8 or 12.1.10-h2 or later. 12.1.2 through 12.1.4-h* Upgrade to 12.1.4-h12 or 12.1.10-h2 or later.
Temporary workarounds
  • Please note that this Threat ID requires SSL Decryption.

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

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