CVE-2026-0263
Last modified
CVE-2026-0263 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:H/U:Red
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Paloaltonetworks | Pan-Os | >= 11.1.0, < 11.1.4 |
| Paloaltonetworks | Pan-Os | >= 11.1.5, < 11.1.6 |
| Paloaltonetworks | Pan-Os | >= 11.1.8, < 11.1.10 |
| Paloaltonetworks | Pan-Os | >= 11.1.11, < 11.1.13 |
| Paloaltonetworks | Pan-Os | 11.1.4 |
| Paloaltonetworks | Pan-Os | 11.1.6 |
| Paloaltonetworks | Pan-Os | 11.1.7 |
| Paloaltonetworks | Pan-Os | 11.1.10 |
| Paloaltonetworks | Pan-Os | 11.1.13 |
| Paloaltonetworks | Pan-Os | 11.1.14 |
| Paloaltonetworks | Pan-Os | >= 11.2.0, < 11.2.4 |
| Paloaltonetworks | Pan-Os | >= 11.2.5, < 11.2.7 |
| Paloaltonetworks | Pan-Os | >= 11.2.8, < 11.2.10 |
| Paloaltonetworks | Pan-Os | 11.2.4 |
| Paloaltonetworks | Pan-Os | 11.2.7 |
| Paloaltonetworks | Pan-Os | 11.2.10 |
| Paloaltonetworks | Pan-Os | 11.2.11 |
| Paloaltonetworks | Pan-Os | >= 12.1.0, < 12.1.4 |
| Paloaltonetworks | Pan-Os | >= 12.1.5, < 12.1.7 |
| Paloaltonetworks | Pan-Os | 12.1.4 |
References
- https://security.paloaltonetworks.com/CVE-2026-0263Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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