CVE-2026-0263
criticalA buffer overflow vulnerability in the IKEv2 processing of Palo Alto Networks PAN-OS® software allows an unauthenticated network-based attacker to execute arbi…
Vendor / product: Paloaltonetworks — pan-os
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
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-05-13 18:16
Modified: 2026-10-26 17:10
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
paloaltonetworks / pan-os ≥11.1.0 <11.1.4, ≥11.1.5 <11.1.6, ≥11.1.8 <11.1.10, ≥11.1.11 <11.1.13, 11.1.4, 11.1.6
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://security.paloaltonetworks.com/CVE-2026-0263
References
- https://security.paloaltonetworks.com/CVE-2026-0263 psirt@paloaltonetworks.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗