CVE-2026-0264CWE-122

PAN-OS: Heap-Based Buffer Overflow in DNS Proxy and DNS Server Allows Unauthenticated Remote Code Execution

High · published May 13, 2026

CVSS v4.0
7.2
EPSS
0%
Percentile
40.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.2 · HIGH
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:Red
EPSS
0.00474 · 40.0th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-05-13T17:40Z
EPSS history
Timeline
  • 13 MAY 17:40Z
    PAN-OS: Heap-Based Buffer Overflow in DNS Proxy and DNS Server Allows Unauthenticated Remote Code Execution
    cvelistv5