CVE-2026-0263 PUBLISHED

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

Assigner: palo_alto
Reserved: 03.11.2025 Published: 13.05.2026 Updated: 14.05.2026

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.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 7.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	Low
Attack Complexity	High	Integrity	High	Integrity	Low
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Palo Alto Networks
Product	Cloud NGFW
Versions	Default: unaffected Version All is unaffected

Vendor	Palo Alto Networks
Product	PAN-OS
Versions	Default: unaffected affected from 12.1.0 to 12.1.7, 12.1.4-h5 (excl.) affected from 11.2.0 to 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17 (excl.) affected from 11.1.0 to 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33 (excl.) Version 10.2.0 is unaffected

Vendor	Palo Alto Networks
Product	Prisma Access
Versions	Default: unaffected Version All is unaffected

Exploits

Palo Alto Networks is not aware of any malicious exploitation of this issue.

Credits

our internal security research teams other

References

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

Problem Types

CWE-787 Out-of-bounds Write CWE

Impacts

CAPEC-100 Overflow Buffers