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Palo Alto Networks Security AdvisoriesCVE-2026-109618

CVE-2026-109618: Impact of Critical Vulnerabilities in PHP (CVE-2026-109618, CVE-2026-109619) on Palo Alto Networks Products

HighVendor CVSS 8.7 / 10 2 CVEs Published Oct 21, 2026 at 4:00 PM UTC

Summary

Palo Alto Networks is aware of two critical vulnerabilities in PHP: CVE-2026-109618 and CVE-2026-109619.

CVE-2026-109618 involves a remote code execution vulnerability where handling out-of-memory errors via longjmp() leaves request memory uninitialized due to improper control flow management, allowing attackers to reliably achieve RCE using out-of-memory (OOM) triggers.

CVE-2026-109619 describes a remote code execution vulnerability where longjmp() fatal error handling leaves global memory pointing to freed memory regions. These regions can later be read or branched on during subsequent requests, enabling attackers to execute arbitrary code.

Palo Alto Networks has conducted an evaluation of our product portfolio regarding this issue; a summary of the status across products is provided in the table below. We will update the below table when we get more information.

Products covered

  • Bridgecrew

  • Cloud NGFW

  • Cortex XDR Agent

  • Cortex XSOAR

  • Cortex Xpanse

  • Idira

  • PAN-OS

  • Panorama

Show 1 more products
  • Prisma Access

Remediation

PAN-OS

This issue will be fixed in the upcoming releases of PAN-OS. This advisory will be updated with fixed versions and release estimates as they become available.

Until PAN-OS fix versions are available we recommend implementing the workaround and mitigations listed below.

See https://unit42.paloaltonetworks.com/cve-2026-109618-cve-2026-109619/ for more details on the Palo Alto Networks product capabilities to protect against attacks that exploit this issue.

Vendor-listed fixes

  • Bridgecrew All

  • Cloud NGFW All

  • Cortex XDR Agent All

  • Cortex XSOAR All

  • Cortex Xpanse All

  • Idira All

  • PAN-OS None

  • Panorama None

Show 1 more fixes
  • Prisma Access All

CVEs in this advisory 2

Updates

  1. Published by Palo Alto Networks

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.