Known exploited · PHP
CVE-2019-11043: PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability
What it is
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.
- Vendor
- PHP
- Product
- FastCGI Process Manager (FPM)
- Added to KEV
- March 25, 2022
- CISA due date
- April 15, 2022
- Ransomware use
- Known
What CISA requires
Apply updates per vendor instructions.
Forensic triage
No
What to do now
- Find every instance of FastCGI Process Manager (FPM) you run, including the forgotten ones, and check its version against the vendor advisory.
- Apply the vendor's fix or mitigation, before April 15, 2022 if you are bound by CISA's deadline, sooner if it faces the internet.
- Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
References
H2 Security
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Start freeSource: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.