Vulnerability · Published May 13, 2026 · Assigned by palo_alto

CVE-2026-0263PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing

High 7.2

In plain English

A high-severity out-of-bounds write in Cloud NGFW from Palo Alto Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 4.0)7.2High

Exploit odds (30 days)0.4%top 68.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Palo Alto Networks	Cloud NGFW	see references
Palo Alto Networks	PAN-OS	12.1.0 – before 12.1.7, 12.1.4-h511.2.0 – before 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h1711.1.0 – before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33
Palo Alto Networks	Prisma Access	see references

Weakness: CWE-787 · Vector: 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

References

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