High [CVE-2026-0229] denial-of-service (DoS) vulnerability in the Advanced DNS Security (ADNS) feature of Palo Alto Networks PAN-OS® software
This high-severity Palo Alto Networks advisory covers CVE-2026-0229 affecting PAN-OS, Prisma Access, Cloud NGFW.
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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.
- PAN-OS Firewall < 12.1.4
- PAN-OS Firewall < 11.2.10
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- PAN-OS Firewall >= 12.1.4
- PAN-OS Firewall >= 11.2.10
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- VersionMinor VersionSuggested SolutionCloud NGFW All No action needed.
- PAN-OS 12.1 12.1.2 through 12.1.3 Upgrade to 12.1.4 or later.
- PAN-OS 11.2 11.2.0 through 11.2.9 Upgrade to 11.2.10 or later.
- PAN-OS 11.1No action needed.PAN-OS 10.2No action needed.All olderunsupportedPAN-OS versions Upgrade to a supported fixed version.Prisma Access AllNo action needed.
- No known workarounds exist for this issue.
- Due to the nature of this vulnerability, a Threat Prevention Signature to detect this is also not possible.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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