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CVE REMEDIATION GUIDE
Review reviewHighFixed-version data available

CVE-2026-0264 remediation guide

Palo Alto Networks Cloud NGFW, PAN-OS, Prisma Access

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.

Open CVE record
ProductPalo Alto Networks Cloud NGFW, PAN-OS, Prisma Access
Affected versions>= 12.1.0 < 12.1.7, 12.1.4-h5, >= 11.2.0 < 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17, >= 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, >= 10.2.0 < 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34, < 10.2.7, >= 10.2.8 < 10.2.10, >= 10.2.11 < 10.2.13, >= 10.2.14 < 10.2.16, 10.2.7, 10.2.10, 10.2.13, 10.2.16, 10.2.17, 10.2.18, >= 11.1.0 < 11.1.4, >= 11.1.5 < 11.1.6, >= 11.1.8 < 11.1.10, >= 11.1.11 < 11.1.13, 11.1.4, 11.1.6
Fixed versions10.2.7, 10.2.10, 10.2.13, 10.2.16, 11.1.4, 11.1.6, 11.1.10, 11.1.13, 11.2.4, 11.2.7, 11.2.10, 12.1.4, 12.1.7
Priority basisReview · CVSS 7.2 · EPSS 0.47%
01

Identify the affected asset

Confirm whether Palo Alto Networks Cloud NGFW, PAN-OS, Prisma Access is installed, record the deployed version and installation path, and identify exposed interfaces.

  • Record the product name, package or appliance identifier, and installed version.
  • Identify internet-facing, administrative, API, and internal access paths.
  • Preserve the pre-change configuration and relevant service logs.
02

Validate the affected-version match

Compare the deployed version with the affected range: >= 12.1.0 < 12.1.7, 12.1.4-h5, >= 11.2.0 < 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17, >= 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, >= 10.2.0 < 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34, < 10.2.7, >= 10.2.8 < 10.2.10, >= 10.2.11 < 10.2.13, >= 10.2.14 < 10.2.16, 10.2.7, 10.2.10, 10.2.13, 10.2.16, 10.2.17, 10.2.18, >= 11.1.0 < 11.1.4, >= 11.1.5 < 11.1.6, >= 11.1.8 < 11.1.10, >= 11.1.11 < 11.1.13, 11.1.4, 11.1.6. Treat incomplete inventory results as unresolved.

03

Prioritize with independent signals

The CVSS severity warrants an early asset and exposure review. Combine this signal with asset criticality, exposure, compensating controls, and business impact.

04

Apply supported remediation

Follow the vendor advisory or supported update path. Current fixed-version status: 10.2.7, 10.2.10, 10.2.13, 10.2.16, 11.1.4, 11.1.6, 11.1.10, 11.1.13, 11.2.4, 11.2.7, 11.2.10, 12.1.4, 12.1.7. Preserve configuration and rollback material before change.

05

Verify the result

Confirm the resulting version, service health, authentication and access paths, monitoring coverage, and relevant security logs.

  • Confirm the expected version and package state.
  • Run a functional health check for critical service paths.
  • Review authentication, error, application, and security monitoring logs.
  • Reassess exposure if the supported fix cannot be applied.

Operational boundary

This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.