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// CVE · PUBLISHED 2026-10-21

CVE-2026-109618

PHP Group / PHP · Siemens / AMIS TS · Siemens / AX4 · +27

9.2 · CVSS 4.0CriticalCISA KEV

CISA lists this CVE as exploited in the wild. Patch it before anything rated by score alone.

Description

PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE).

OhShit! incidents

References

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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.