CVE-2019-11043
HIGHCISA KEVEPSS 100th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability
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.
Apply updates per vendor instructions.
Remediation due: 2022-04-15
Associated with ransomware campaigns
References
- lists.opensuse.org
- lists.opensuse.org
- seclists.org
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- seclists.org
- security.netapp.com
- support.apple.com
- support.f5.com
- usn.ubuntu.com
- usn.ubuntu.com
- debian.org
- debian.org
- synology.com
- tenable.com
Related Vulnerabilities
Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2014-0195 | Medium | 6.8 | 100% | - | Fix |
| CVE-2017-7269 | Critical | 9.8 | 100% | KEV | - |
| CVE-2011-4862 | High | 10.0 | 95% | - | Fix |
| CVE-2007-5659 | High | 7.8 | 94% | KEV | Fix |
| CVE-2022-3786 | High | 7.5 | 92% | - | Fix |
| CVE-2009-3023 | High | 9.0 | 91% | - | - |
Common questions
How do I fix CVE-2019-11043?
Published advisories record a fix for 15 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2019-11043 being actively exploited?
Yes. CVE-2019-11043 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. CISA has also linked it to known ransomware campaigns. US federal agencies were required to remediate it by 2022-04-15. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2019-11043?
CVE-2019-11043 has a CVSS v3 base score of 8.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2019-11043 affect?
Published advisories record a fix for libapache2-mod-php5 (Ubuntu), libapache2-mod-php7.0 (Ubuntu), libapache2-mod-php7.2 (Ubuntu), php5 (Ubuntu), and 11 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.