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CVE-2026-0264

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

Published: May 13, 2026Updated: Jun 9, 2026 Sources: CVE List NVD BDUCWE-122
NVD MITRE
9.0CVSSCRITICAL
EPSS Score
0.4%
Top 67.7%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HC:HI:HA:H
Exploitability
AV:NAccess Vector
Network
AC:HAccess Complexity
High
Impact
C:HConfidentiality
H
I:HIntegrity
H
A:HAvailability
H
Open in CVSS calculator →

Weaknesses

CWE-122

Affected Products

Cloud NGFWPalo Alto NetworksSecurity Products
PAN-OSPalo Alto NetworksSecurity Products
Prisma AccessPalo Alto NetworksSecurity Products
PAN-OSPalo Alto Networks Inc.Security Products
palo alto networkscommercialUSSecurity Productsaka pan-os, prisma access, cloud ngfw
palo alto networks inc.commercialUSSecurity Productsaka paloaltonetworks, pan inc.

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://security.paloaltonetworks.com/CVE-2026-0264
security.paloaltonetworks.com
https://cert-portal.siemens.com/productcert/html/ssa-967325.html
cert-portal.siemens.com

Timeline

Published
May 13, 2026
Last Updated
Jun 9, 2026

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