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Findings

CVE-2019-11043

PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability

Published Oct 28, 2019 · updated Jun 16, 2026 · php php

In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code execution.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 28, 2019 · Catalog

    Detected

    In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code execution.

  2. Mar 25, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 15, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code execution.

Required action

Apply updates per vendor instructions.

CISA due date Apr 15, 2022

Affected

  • cpe canonical/ubuntu linux12.04
  • cpe canonical/ubuntu linux14.04
  • cpe canonical/ubuntu linux16.04
  • cpe canonical/ubuntu linux18.04
  • cpe canonical/ubuntu linux19.04
  • cpe debian/debian linux9.0
  • cpe fedoraproject/fedora29
  • cpe php/phpversion unspecified
  • cpe redhat/software collections1.0
  • cpe tenable/tenable.scversion unspecified
  • vendor PHP FastCGI Process Manager (FPM)version unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2019-11043

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2019-11043

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-11043

    30-day exploitation probability 99.7%

    first.org
  • Exploit DatabasePublic exploit reference47553

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference48182

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_multi/http/php_fpm_rce

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2019-11043

    In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code exec

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/156642/PHP-FPM-7.x-Remote-Code-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References

CVE-2019-11043 · ZeroDay Findings