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CVE-2026-0264 PAN-OS: Heap-Based Buffer Overflow in DNS Proxy and DNS Server Allows Unauthenticated Remote Code Execution (Severity: HIGH)

highCVE-2026-0264

CSIRTS triage

vendor: Palo Alto Networksproduct: PAN-OSRemote code execution
What
A heap-based buffer overflow in DNS Proxy and DNS Server allows unauthenticated remote code execution.
Who is affected
Deployments of PAN-OS are affected.
Urgency
Remediation is urgent due to the high severity and potential for remote code execution.
Action
Apply the latest updates to PAN-OS to fix the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Palo Alto Networks Security Advisories (INTL · vendor-psirt · site)
Severity
high
Published
2026-05-28
Exploitation
Not in CISA KEV at last sync

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

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-0264coverage & exploitation statusNVD · CVE.org

Recent advisories for PAN-OS

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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