CVE-2026-0318: CWE-754 Improper Check for Unusual or Exceptional Conditions in Palo Alto Networks Cloud NGFW
Description
CVE-2026-0318 is a medium severity stack-based buffer overflow vulnerability in the log processing functionality of Palo Alto Networks PAN-OS software on Panorama. Exploitation can cause a denial of service (DoS) condition, with repeated attempts forcing Panorama into maintenance mode. This vulnerability does not affect Cloud NGFW, Prisma Access, or standalone PAN-OS firewalls.
CVSS v4.0
Score 4.6medium
Affected software
Palo Alto Networks
Cloud NGFW
Palo Alto Networks
PAN-OS
Palo Alto Networks
Prisma Access
pkg:github/paloaltonetworks/cloud-ngfwRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-0318) involves an improper check for unusual or exceptional conditions (CWE-754) in the log processing component of Palo Alto Networks PAN-OS software running on Panorama. The flaw is a stack-based buffer overflow that can be triggered remotely without authentication, leading to denial of service by crashing the Panorama system and causing it to enter maintenance mode. Other Palo Alto products such as Cloud NGFW, Prisma Access, and standalone PAN-OS firewalls are not affected. The CVSS 4.0 base score is 4.6, indicating medium severity.
Potential Impact
Successful exploitation results in denial of service on Panorama devices by causing a stack-based buffer overflow in log processing. This can disrupt network security management but does not provide direct code execution or data compromise. Repeated exploitation attempts cause Panorama to enter maintenance mode, impacting availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this vulnerability affects Panorama specifically, administrators should monitor Palo Alto Networks advisories for official fixes or temporary mitigations. Cloud NGFW and Prisma Access users are not affected and do not require action.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- palo_alto
- Date Reserved
- 2025-11-03T20:45:16.597Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acfe7382cdf04f656ad1927
Added to database: 10/14/2026, 20:34:00 UTC
Last enriched: 10/14/2026, 20:48:45 UTC
Last updated: 10/15/2026, 02:48:08 UTC
Views: 7
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