CVE-2026-0317: PAN-OS: Denial of Service Vulnerability
CVE-2026-0317
Summary
A denial-of-service (DoS) vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to reboot a firewall by sending a specially crafted packet through the dataplane. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode.
This issue is applicable to the PAN-OS software versions listed below on PA-Series firewalls, VM-Series firewalls, and Prisma® Access software. This issue does not affect Cloud NGFW.
We have successfully completed the Prisma Access upgrade for all customers, with the exception of those facing issues such as conflicting maintenance windows. Remaining customers will be promptly scheduled for an upgrade through our standard upgrade process.
Products covered
Cloud NGFW
PAN-OS
Prisma Access
PAN-OS 12.1
PAN-OS 11.2
PAN-OS 11.1
PAN-OS 10.2
PAN-OS 10.1
Remediation
Version | Minor Version | Suggested Solution |
|---|---|---|
Cloud NGFW | No action needed. | |
PAN-OS 12.1 | No action needed. | |
PAN-OS 11.2 | 11.2.0 through 11.2.4 | Upgrade to 11.2.4-h4 or 11.2.5 or later. |
11.2.0 through 11.2.3 | Upgrade to 11.2.3-h6 or 11.2.5 or later. | |
11.2.0 through 11.2.2 | Upgrade to 11.2.2-h2 or 11.2.5 or later. | |
PAN-OS 11.1 | 11.1.0 through 11.1.6 | Upgrade to 11.1.6-h1 or 11.1.7 or later. |
11.1.0 through 11.1.4 | Upgrade to 11.1.4-h13 or 11.1.7 or later. | |
11.1.0 through 11.1.3 | Remain on a version older than 11.1.3-h2 or upgrade to 11.1.4-h13 or 11.1.7 or later. | |
11.1.0 through 11.1.2 | Upgrade to 11.1.2-h18 or 11.1.7 or later. | |
PAN-OS 10.2 | 10.2.0 through 10.2.13 | Upgrade to 10.2.13-h3 or 10.2.14 or later. |
10.2.0 through 10.2.12 | Upgrade to 10.2.12-h6 or 10.2.14 or later. | |
10.2.0 through 10.2.11 | Upgrade to 10.2.11-h12 or 10.2.14 or later. | |
10.2.0 through 10.2.10 | Upgrade to 10.2.10-h14 or 10.2.14 or later. | |
10.2.0 through 10.2.9 | Upgrade to 10.2.9-h21 or 10.2.14 or later. | |
10.2.0 through 10.2.8 | Upgrade to 10.2.8-h21 or 10.2.14 or later. | |
10.2.0 through 10.2.7 | Upgrade to 10.2.7-h24 or 10.2.14 or later. | |
10.2.0 through 10.2.4 | Remain on a version older than 10.2.4-h25 | |
PAN-OS 10.1 | No action needed. | |
All older unsupported PAN-OS versions | Upgrade to a supported fixed version. | |
Prisma Access on PAN-OS | 11.2.0 through 11.2.4 | Upgrade to 11.2.4-h4 or later |
10.2.0 through 10.2.10 | Upgrade to 10.2.10-h14 or 11.2.4-h4 or later. | |
10.2.0 through 10.2.4 | Remain on a version older than 10.2.4-h25. |
Vendor-listed fixes
Cloud NGFW All
PAN-OS 12.1 All
PAN-OS 11.2 >= 11.2.2-h2, >= 11.2.3-h6, >= 11.2.4-h4, >= 11.2.5
PAN-OS 11.1 < 11.1.2-h9, >= 11.1.2-h18, < 11.1.3-h2, < 11.1.4-h4, >= 11.1.4-h13, >= 11.1.6-h1, >= 11.1.7
PAN-OS 10.2 < 10.2.4-h25, < 10.2.7-h11, >= 10.2.7-h24, < 10.2.8-h10, >= 10.2.8-h21, < 10.2.9-h6, >= 10.2.9-h21, < 10.2.10-h2, >= 10.2.10-h14, >= 10.2.11-h12, >= 10.2.12-h6,
PAN-OS 10.1 All
Prisma Access < 10.2.4-h25 on PAN-OS, >= 10.2.10-h14 on PAN-OS, >= 11.2.4-h4 on PAN-OS
CVEs in this advisory 1
Updates
- Published by Palo Alto Networks
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.