CVE-2019-11043Actively exploitedAdded to KEV 2022-03-25Known ransomware campaign use

PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability

PHP, FastCGI Process Manager (FPM)

Description

In some versions of PHP in certain configurations of FPM setup, it is possible to cause FPM module to write past allocated buffers allowing the possibility of remote code execution.

CVSS severity for this advisory hasn't been enriched from NVD yet, check back shortly.

EPSS, exploit probability

Critical

99.7%

estimated chance of real-world exploitation in the next 30 days, higher than 100.0% of every CVE FIRST.org scores

Refreshed 10/28/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.

Required action

Apply updates per vendor instructions.

CISA-recommended due date: 2022-04-15

CWE-120

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