CVE-2026-0264

Severity CVSS v4.0:

HIGH

Type:

CWE-122 Heap-based Buffer Overflow

Publication date:

13/05/2026

Last modified:

13/05/2026

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.

Impact

Vector 4.0

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 CVSS v4.0 Severity and Metrics:

Base Score: 7.20 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

Attack Vector (AV): Network
Attack Complexity (AC): High
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): Low
Integrity (SI): Low
Availability (SA): None
Automatable (AU): Yes
Recovery (R): User
Value Density (V): Concentrated
Vulnerability Response Effort (RE): High
Provider Urgency (U): Red
Exploit Maturity (E): Unreported

Base Score 4.0

7.20

Severity 4.0

HIGH

References to Advisories, Solutions, and Tools

https://security.paloaltonetworks.com/CVE-2026-0264