HIGHCVE-2026-0264Published Modified CNA palo_alto
CVE-2026-0264: PAN-OS: Heap-Based Buffer Overflow in DNS Proxy and DNS Server Allows Unauthenticated Remote Code Execution
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.
Metrics
- CVSS v4.0
- 7.2
- Severity
- HIGH
- Fixed in
- 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34
- Affected Products
- 3
Fix available
10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h3411.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h3311.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h1712.1.7, 12.1.4-h5All
Affected packages
- Palo Alto Networks / Cloud NGFWFixed in All
- Palo Alto Networks / PAN-OS< 12.1.7, 12.1.4-h5 (from 12.1.0) · < 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17 (from 11.2.0) · < 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33 (from 11.1.0) · < 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34 (from 10.2.0)
- Palo Alto Networks / Prisma AccessFixed in All
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:RedReferences