CVE-2026-0264

CRITICAL

Palo Alto Networks PAN-OS - Heap-based Buffer Overflow via DNS Proxy and Server

Title source: llm
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 9.8
EPSS 0.0047
EPSS Percentile 38.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-122
Status published
Products (8)
Palo Alto Networks/Cloud NGFW All
Palo Alto Networks/PAN-OS 10.2.0 - 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34
Palo Alto Networks/PAN-OS 11.1.0 - 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33
Palo Alto Networks/PAN-OS 11.2.0 - 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17
Palo Alto Networks/PAN-OS 12.1.0 - 12.1.7, 12.1.4-h5
Palo Alto Networks/Prisma Access All
paloaltonetworks/pan-os 10.2.7 (26 CPE variants)
paloaltonetworks/pan-os 10.2.10 (18 CPE variants)
Published May 13, 2026
Tracked Since May 13, 2026