9.8

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

CVSS: 9.8v3.1CriticalKEVRansomwareAnalyzed
AliasesMGASA-2019-0307SUSE-SU-2019:2809-1SUSE-SU-2019:2819-1
Published 28-10-2019Last modified 21-10-2025

Vulnerability summary

CVE-2019-11043 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in PHP FastCGI Process Manager (FPM). It is known to be exploited: CISA lists it, first on 25-03-2022. It has been used in ransomware campaigns. EPSS estimates a 99.75% chance of exploitation in the next 30 days, higher than 99.9% of scored vulnerabilities. 6 public exploits are recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
99.75%
0%100%
Critical · -0.03 pp in 30 days
KEVListedCISA
RansomwareKnown useFlagged by CISA
Public exploits6github, reference, exploit-database, metasploit

Advisory lineage

Upstream 0 · Downstream 5 · Related 4

Timeline

  1. 28-10-2019
    PublishedVulnerability first disclosed.
  2. 25-03-2022
    Added to CISA KEVPHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability
  3. 15-04-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 4 sources · 3 versions

EPSS trend

Probability

99.75%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

-0.03 pp

From 99.78% on 20-09-2026

20-09-202620-10-2026
EPSS score
99.75%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
25-03-2022
Federal due date
15-04-2022
Ransomware

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2019-11043

Public exploits

6 found
  • githubUnverified

    Phuip Fpizdam

    Maturity: poc

  • referenceUnverified

    Exploit Reference (bugs.php.net)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

Show all 6 exploits
  • exploit-databaseremotephpVerified

    PHP-FPM - Underflow Remote Code Execution (Metasploit)

    Maturity: weaponized

  • exploit-databasephpUnverified

    PHP-FPM + Nginx - Remote Code Execution

    Maturity: poc

  • MetasploitMetasploitremoteUnverified

    PHP-FPM Underflow RCE

    exploit/multi/http/php_fpm_rce

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Redhat154 products
Suse9 products
  • php72&distro=SUSE Linux Enterprise Module for Web and Scripting 12< 7.2.5-1.29.1
  • php72&distro=SUSE Linux Enterprise Software Development Kit 12 SP4< 7.2.5-1.29.1
  • php72&distro=SUSE Linux Enterprise Software Development Kit 12 SP5< 7.2.5-1.29.1
  • php7&distro=SUSE Linux Enterprise Module for Package Hub 15< 7.2.5-4.46.1
  • php7&distro=SUSE Linux Enterprise Module for Web and Scripting 12< 7.0.7-50.88.1
Debian4 products
  • php5< 5.6.40+dfsg-0+deb8u7
  • php7.0< 7.0.33-0+deb9u6
  • php7.3< 7.3.11-1~deb10u1
  • debian_linuxEOL9.0 | 10.0
Opensuse4 products
  • php7-test&distro=openSUSE Leap 15.0< 7.2.5-lp150.2.29.2
  • php7-test&distro=openSUSE Leap 15.1< 7.2.5-lp151.6.13.1
  • php7&distro=openSUSE Leap 15.0< 7.2.5-lp150.2.29.2
  • php7&distro=openSUSE Leap 15.1< 7.2.5-lp151.6.13.1
Ubuntu3 products
  • php5< 5.5.9+dfsg-1ubuntu4.29+esm6
  • php7.0< 7.0.33-0ubuntu0.16.04.7
  • php7.2< 7.2.24-0ubuntu0.18.04.1
Mageia2 products
  • pcre2< 10.33-1.1.mga7
  • php< 7.3.11-1.mga7
Canonical1 product
  • ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04 | 19.04 | 19.10
Fedoraproject1 product
Php1 product
  • php≥ 7.1.x, < 7.1.33 | ≥ 7.2.x, < 7.2.24 | ≥ 7.3.x, < 7.3.11 | ≥ 7.1.0, < 7.1.33 | ≥ 7.2.0, < 7.2.24 | ≥ 7.3.0, < 7.3.11
Tenable1 product

10 vendors · 180 products

References

59 links
Show all 59 references