Denial-of-Service Vulnerability in Palo Alto Networks PAN-OS Software
CVE-2026-0229

6.6MEDIUM

Key Information:

Vendor

Palo Alto Networks
Status
Cloud Ngfw
Pan-os
Prisma Access
Vendor
CVE Published:
11 February 2026

Badges

👾 Exploit Exists

What is CVE-2026-0229?

The PAN-OS software by Palo Alto Networks contains a denial-of-service vulnerability in its Advanced DNS Security (ADNS) feature. An unauthenticated attacker can exploit this vulnerability by sending specially crafted packets that trigger unauthorized system reboots. If this is done repeatedly, it may cause the firewall to enter maintenance mode, disrupting service availability. It’s crucial for users to apply the necessary security updates to protect their systems from potential attacks, as Cloud NGFW and Prisma Access services remain unaffected.

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Deploy the Patch

Affected Version(s)

PAN-OS 12.1.0 < 12.1.4

PAN-OS 11.2.0 < 11.2.10

Cloud NGFW All

References

https://security.paloaltonetworks.com/CVE-2026-0229
vendor-advisory

CVSS V4

Score:
6.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

an internal reporter, jliu@TikkalaSecurity,
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