Pan-OS IKEv2 Buffer Overflow Enables RCE
CVE-2026-0263 Published on May 13, 2026
PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing
A buffer overflow vulnerability in the IKEv2 processing of Palo Alto Networks PAN-OS® software allows an unauthenticated network-based attacker to execute arbitrary code with elevated privileges on the firewall, or cause a denial of service (DoS) condition.
Panorama, Cloud NGFW, and Prisma® Access are not impacted by these vulnerabilities.
Timeline
Initial publication.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-0263 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2026-0263
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Affected Versions
Palo Alto Networks Cloud NGFW:- Version All is unaffected.
- Version 12.1.0 and below 12.1.7, 12.1.4-h5 is affected.
- Version 11.2.0 and below 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17 is affected.
- Version 11.1.0 and below 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33 is affected.
- Version 10.2.0 is unaffected.
- Version All is unaffected.