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Review reviewHigh

CVE-2026-0264

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.

CVSS
7.2
EPSS
0.47%
38.5% percentile
CISA KEV
Not listed
Published
2026.05.14
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.47%
Technical severityCVSS 7.2

Vulnerability overview

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.

Affected product and versions

Product
Palo 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 versions
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

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Palo Alto Networks Cloud NGFW, PAN-OS, Prisma Access and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:H/U:Red
CWE
CWE-122
CVE-2026-0264 — Palo Alto Networks Cloud NGFW, PAN-OS, Prisma Access | SECUFOCUS NOW