CVE-2026-109619

PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).

CVSS 4.0

9.2CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

100% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-25)

CWEs

CWE-416, CWE-755, CWE-824, CWE-1325

Published

2026-10-21

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• paloaltonetworks:pan-os
• paloaltonetworks:panorama_virtual_appliance
• php:php
• siemens:ruggedcom_ape1808_firmware

References

• https://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rp
• http://www.openwall.com/lists/oss-security/2026/10/21/16
• http://www.openwall.com/lists/oss-security/2026/10/21/17
• http://www.openwall.com/lists/oss-security/2026/10/21/23
• http://www.openwall.com/lists/oss-security/2026/10/21/7

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