CVE-2026-0263

PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing

State: Published
Severity: 7.2 High
Published: May 13, 2026
Updated: May 14, 2026
Reserved: Nov 3, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.2 High	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:U/AU:Y/R:U/V:C/RE:H/U:Red	palo_alto

Weaknesses

CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
Cloud NGFWPalo Alto Networks	AllNot affected
PAN-OSPalo Alto Networks	12.1.0 to before 12.1.7, 12.1.4-h5Affectedfrom 12.1.7Not affectedfrom 12.1.4-h5Not affected 11.2.0 to before 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17Affectedfrom 11.2.12Not affectedfrom 11.2.10-h6Not affectedfrom 11.2.7-h13Not affectedfrom 11.2.4-h17Not affected 11.1.0 to before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33Affectedfrom 11.1.15Not affectedfrom 11.1.13-h5Not affectedfrom 11.1.10-h25Not affectedfrom 11.1.7-h6Not affectedfrom 11.1.6-h32Not affectedfrom 11.1.4-h33Not affected 10.2.0Not affected
Prisma AccessPalo Alto Networks	AllNot affected

References

https://security.paloaltonetworks.com/CVE-2026-0263vendor-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.