known ransomware use

PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability

Added to KEV
2022-03-25
Federal due date
2022-04-15
Vendor
PHP
Product
FastCGI Process Manager (FPM)
EPSS
99.9th percentile (score 0.941, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2019-11043

CISA short 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.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.