# CVE-2019-11043: PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability

Source: https://junglewise.ai/threats/cve-2019-11043-php-fastcgi-process-manager-fpm-buffer-overflow-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-03-25. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2019-11043 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2022-03-25

A buffer overflow vulnerability in the PHP FastCGI Process Manager (FPM) allows an attacker to write past allocated buffers into space reserved for FCGI protocol data. This flaw can be exploited in certain FPM configurations to achieve remote code execution.

Vendors: [PHP](https://junglewise.ai/threats/vendors/php).

## Quick answers

**Is CVE-2019-11043 exploited in the wild?** Yes. CVE-2019-11043 is known to be exploited in the wild, first recorded on 25 March 2022. Treat it as urgent.

**How severe is CVE-2019-11043?** Critical severity, with a CVSS score of 9.8, published 25 March 2022.

**Which products and versions are affected?** PHP Group PHP 7.1.x below 7.1.33, 7.2.x below 7.2.24, 7.3.x below 7.3.11.

**Is there a fix for CVE-2019-11043?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2019-11043 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2019-11043?** Check whether you run PHP FastCGI Process Manager (FPM). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- PHP Group PHP 7.1.x below 7.1.33, 7.2.x below 7.2.24, 7.3.x below 7.3.11

## Timeline

- 2019-10-24: disclosed: Initial bug report and patch development on PHP bug tracker.
- 2022-03-25: kev added: Added to CISA's Known Exploited Vulnerabilities Catalog.
- 2022-03-25: advisory: NVD publication date.
- 2022-03-25: exploited: Confirmed exploited in the wild per CISA KEV.