Critical severity · published May 13, 2026
CVE-2026-0263
PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing
9.8
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
PAN-OS · Palo Alto Networks
12.1.0 before 12.1.7, 12.1.4-h5; 11.2.0 before 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17; 11.1.0 before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-0263
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-0263
Vendor Advisory
https://security.paloaltonetworks.com/CVE-2026-0263
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