Quick answers
- Is CVE-2026-0280 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-0280 being exploited in the wild.
- How severe is CVE-2026-0280?
- Informational severity, with a CVSS score of 1.7, published 9 July 2026.
- Which products and versions are affected?
- Palo Alto Networks Prisma Access 11.2.0 < 11.2.7-h18, 10.2.0 < 10.2.10-h39.
- Is there a fix for CVE-2026-0280?
- A patch was published on 2026-07-09. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-0280 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-0280?
- Check whether you run Palo Alto Networks Prisma Access at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An incorrect calculation of buffer size (CWE-131) in the PAN-OS dataplane's IPv6 packet processing logic allows for a security policy bypass. An unauthenticated network-based attacker can exploit this to send traffic to protected services that should otherwise be restricted by firewall rules. The vulnerability requires IPv6 to be enabled on at least one interface to be exploitable. Palo Alto Networks has released patches for affected versions of PAN-OS and Prisma Access, and a mitigation exists by enabling the 'Non SYN TCP Reject' setting.
Affected products
- Palo Alto Networks PAN-OS 12.1 < 12.1.4-h8, 12.1.5 to 12.1.7-h2, 11.2 < 11.2.4-h20, 11.2.5 to 11.2.7-h18, 11.2.8 to 11.2.10-h11, 11.2.11 to 11.2.13, 11.1 < 11.1.16, 10.2 < 10.2.18-h8
- Palo Alto Networks Prisma Access 11.2.0 < 11.2.7-h18, 10.2.0 < 10.2.10-h39
Timeline
- 2026-07-08: disclosed
- 2026-07-08: advisory
- 2026-07-09: patched