CVE-2026-0280: CWE-131 Incorrect Calculation of Buffer Size in Palo Alto Networks Cloud NGFW
An IPv6 packet processing vulnerability in the dataplane of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker to bypass firewall security policy enforcement, allowing network traffic that should be blocked to reach protected services. Cloud NGFW and Panorama are not impacted by this vulnerability.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-0280) involves an incorrect calculation of buffer size (CWE-131) in the IPv6 packet processing component of Palo Alto Networks PAN-OS software's dataplane. Exploitation allows an unauthenticated attacker to bypass firewall security policies, permitting unauthorized network traffic to reach protected services. Cloud NGFW and Panorama are explicitly not impacted. There is no vendor advisory or patch information provided, and no known exploits in the wild have been reported.
Potential Impact
An attacker can bypass firewall security policy enforcement due to improper IPv6 packet processing, potentially allowing unauthorized network traffic to reach protected services. The impact is rated low severity with a CVSS score of 1.7, indicating limited risk and no direct integrity, availability, or confidentiality impact reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented. Monitor Palo Alto Networks advisories for updates on remediation.
CVE-2026-0280: CWE-131 Incorrect Calculation of Buffer Size in Palo Alto Networks Cloud NGFW
Description
An IPv6 packet processing vulnerability in the dataplane of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker to bypass firewall security policy enforcement, allowing network traffic that should be blocked to reach protected services. Cloud NGFW and Panorama are not impacted by this vulnerability.
CVSS v4.0
Score 1.7low
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-0280) involves an incorrect calculation of buffer size (CWE-131) in the IPv6 packet processing component of Palo Alto Networks PAN-OS software's dataplane. Exploitation allows an unauthenticated attacker to bypass firewall security policies, permitting unauthorized network traffic to reach protected services. Cloud NGFW and Panorama are explicitly not impacted. There is no vendor advisory or patch information provided, and no known exploits in the wild have been reported.
Potential Impact
An attacker can bypass firewall security policy enforcement due to improper IPv6 packet processing, potentially allowing unauthorized network traffic to reach protected services. The impact is rated low severity with a CVSS score of 1.7, indicating limited risk and no direct integrity, availability, or confidentiality impact reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented. Monitor Palo Alto Networks advisories for updates on remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- palo_alto
- Date Reserved
- 2025-11-03T20:44:39.119Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4ff3f668715ace43ecf5b9
Added to database: 07/09/2026, 19:18:14 UTC
Last enriched: 07/09/2026, 19:33:59 UTC
Last updated: 07/09/2026, 22:39:41 UTC
Views: 7
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