Buffer overflow in Palo Alto Networks Cloud Ngfw
CVE-2026-0264
A buffer overflow vulnerability in the DNS proxy and DNS Server features of Palo Alto Networks PAN-OS® Software allows an unauthenticated attacker with network access to cause a denial of service (DoS) condition (all PAN-OS platforms except Cloud NGFW and Prisma Access) or potentially execute arbitrary code by sending specially crafted network traffic (PA-Series hardware only). Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (39.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Palo Alto Networks Cloud Ngfw — versions All
- Palo Alto Networks Pan-Os — versions 12.1.0, 11.2.0, 11.1.0
- Palo Alto Networks Prisma Access — versions All
- Paloaltonetworks Pan-Os — versions 10.2.7, 10.2.10, 10.2.13
- Siemens Ruggedcom Ape1808
- Siemens Ruggedcom Ape1808 Firmware
Weakness classification (CWE)
References
- security.paloaltonetworks.com/CVE-2026-0264 (vendor-advisory, Vendor Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-0264?
- CVE-2026-0264 is a critical-severity vulnerability in Palo Alto Networks Cloud Ngfw, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-05-13.
- How severe is CVE-2026-0264?
- Critical severity. CVSS v3 base score is 9.8 out of 10.