CVE-2026-109619

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-10-26. Federal remediation due 2026-10-29.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

100.00% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 100.0% of scored records. A rank, not a probability.

NVD base score

9.2 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:X/R:X/V:X/RE:X/U:X

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-26.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-21 13:54Z5 DAYS AGO

Last updated

2026-10-27 03:55Z4 HR AGO

Reserved

2026-10-12

Assigning CNA

php

Record state

PUBLISHED

Severity

Critical (CVSS 9.2)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant
• CWE-755Improper Handling of Exceptional ConditionsClass
• CWE-824Access of Uninitialized PointerBase
• CWE-1325Improperly Controlled Sequential Memory AllocationBase
• CWE-1419Incorrect Initialization of ResourceClass

Data version

5.2

Document digest

bcc815083c843157411d8f851bdb01b6cce8546223e155c714a5885010133be6

• github.comhttps://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rpvendor-advisory
• www.wiz.iohttps://www.wiz.io/blog/php2shell-php-rcethird-party-advisory
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/21/7
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/21/16
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/21/17
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/21/23
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/2
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/14
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/15
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/16
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/19
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/22/20
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/23/4
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-566512.html