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High 8.7Known exploited (CISA KEV)Published Oct 28, 2019
CVE-2019-11043Underflow in PHP-FPM can lead to RCE
Updated under an hour ago ()
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It affects PHP and 22 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 25, 2022; federal agencies had to remediate by Apr 15, 2022, and it is known to be used in ransomware. Treat that date as your deadline.
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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
- 8.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
- Weakness (CWE)
- CWE-120
- Known exploited
- Added to CISA KEV Mar 25, 2022; federal remediation due Apr 15, 2022; known ransomware useApply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 99.75% (percentile 100)
- Assigned by
- php
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
PHP PHP php:php (from the name) | from 7.1.x before 7.1.33; from 7.2.x before 7.2.24; from 7.3.x before 7.3.11 | CNA record |
php php php:php | from 7.1.0 before 7.1.33; from 7.2.0 before 7.2.24; from 7.3.0 before 7.3.11 | NVD |
canonical ubuntu_linux canonical:ubuntu_linux | 12.04; 14.04; 16.04; 18.04; 19.04; 19.10 | NVD |
debian debian_linux debian:debian_linux | 9.0; 10.0 | NVD |
fedoraproject fedora fedoraproject:fedora | 29; 30; 31 | NVD |
tenable tenable.sc tenable:tenable.sc | before 5.19.0 | NVD |
redhat software_collections redhat:software_collections | 1.0 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 8.0 | NVD |
redhat enterprise_linux_desktop redhat:enterprise_linux_desktop | 6.0; 7.0 | NVD |
redhat enterprise_linux_eus redhat:enterprise_linux_eus | 7.7; 8.1; 8.2; 8.4; 8.6; 8.8 | NVD |
redhat enterprise_linux_eus_compute_node redhat:enterprise_linux_eus_compute_node | 7.7 | NVD |
redhat enterprise_linux_for_arm_64 redhat:enterprise_linux_for_arm_64 | 8.0_aarch64 | NVD |
redhat enterprise_linux_for_arm_64_eus redhat:enterprise_linux_for_arm_64_eus | 8.1_aarch64; 8.2_aarch64; 8.4_aarch64; 8.6_aarch64; 8.8_aarch64 | NVD |
redhat enterprise_linux_for_ibm_z_systems redhat:enterprise_linux_for_ibm_z_systems | 6.0_s390x; 7.0_s390x; 8.0_s390x | NVD |
redhat enterprise_linux_for_ibm_z_systems_eus redhat:enterprise_linux_for_ibm_z_systems_eus | 7.7_s390x; 8.1_s390x; 8.2_s390x; 8.4_s390x; 8.6_s390x; 8.8_s390x | NVD |
redhat enterprise_linux_for_power_big_endian redhat:enterprise_linux_for_power_big_endian | 6.0_ppc64; 7.0_ppc64 | NVD |
redhat enterprise_linux_for_power_big_endian_eus redhat:enterprise_linux_for_power_big_endian_eus | 7.7_ppc64 | NVD |
redhat enterprise_linux_for_power_little_endian redhat:enterprise_linux_for_power_little_endian | 7.0_ppc64le; 8.0_ppc64le | NVD |
redhat enterprise_linux_for_power_little_endian_eus redhat:enterprise_linux_for_power_little_endian_eus | 7.7_ppc64le; 8.1_ppc64le; 8.2_ppc64le; 8.4_ppc64le; 8.6_ppc64le; 8.8_ppc64le | NVD |
redhat enterprise_linux_for_scientific_computing redhat:enterprise_linux_for_scientific_computing | 7.0 | NVD |
redhat enterprise_linux_server redhat:enterprise_linux_server | 6.0; 7.0 | NVD |
redhat enterprise_linux_server_aus redhat:enterprise_linux_server_aus | 7.7; 8.2; 8.4; 8.6 | NVD |
redhat enterprise_linux_server_tus redhat:enterprise_linux_server_tus | 7.7; 8.2; 8.4; 8.6; 8.8 | NVD |
redhat enterprise_linux_workstation redhat:enterprise_linux_workstation | 6.0; 7.0 | NVD |
References
- https://github.com/neex/phuip-fpizdamx-refsource-misc, exploit, third-party-advisory
- https://bugs.php.net/bug.php?id=78599x-refsource-confirm, exploit, issue-tracking, patch, vendor-advisory
- https://usn.ubuntu.com/4166-1/vendor-advisory, x-refsource-ubuntu, third-party-advisory
- https://www.debian.org/security/2019/dsa-4552vendor-advisory, x-refsource-debian, mailing-list, third-party-advisory
- https://www.debian.org/security/2019/dsa-4553vendor-advisory, x-refsource-debian, mailing-list, third-party-advisory
- https://usn.ubuntu.com/4166-2/vendor-advisory, x-refsource-ubuntu, third-party-advisory
- https://support.f5.com/csp/article/K75408500?utm_source=f5support&%3Butm_medium=RSSx-refsource-confirm, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T62LF4ZWVV7OMMIZFO6IFO5QLZKK7YRD/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- https://security.netapp.com/advisory/ntap-20191031-0003/x-refsource-confirm, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:3286vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:3287vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:3299vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:3300vendor-advisory, x-refsource-redhat, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W23TP6X4H7LB645FYZLUPNIRD5W3EPU/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FSNBUSPKMLUHHOADROKNG5GDWDCRHT5M/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00011.htmlvendor-advisory, x-refsource-suse, mailing-list, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:3724vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:3735vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:3736vendor-advisory, x-refsource-redhat, third-party-advisory
- https://www.synology.com/security/advisory/Synology_SA_19_36x-refsource-confirm
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00014.htmlvendor-advisory, x-refsource-suse, mailing-list, third-party-advisory
- https://support.apple.com/kb/HT210919x-refsource-confirm, third-party-advisory
- https://seclists.org/bugtraq/2020/Jan/44mailing-list, x-refsource-bugtraq, third-party-advisory
- http://seclists.org/fulldisclosure/2020/Jan/40mailing-list, x-refsource-fulldisc, third-party-advisory
- https://access.redhat.com/errata/RHSA-2020:0322vendor-advisory, x-refsource-redhat, third-party-advisory
- http://packetstormsecurity.com/files/156642/PHP-FPM-7.x-Remote-Code-Execution.htmlexploit, third-party-advisory, vdb-entry
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