CVE-2019-11043
CriticalExploitedPublic exploitIn 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…
Published Oct 28, 2019 · Updated Aug 7, 2026 · Also known as DEBIAN-CVE-2019-11043, DLA-1970-1, DSA-4552-1, DSA-4553-1, SUSE-SU-2019:2809-1, SUSE-SU-2019:2819-1, SUSE-SU-2019:2909-1, UBUNTU-CVE-2019-11043, USN-4166-1, USN-4166-2
Key Facts
Patch immediately- CVE-2019-11043 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting PHP, Software Collections (Redhat), Tenable.sc and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 24, 2019 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 100% probability of exploitation in the next 30 days.
- Fixed versions are available, including apache2-mod_php5 5.5.14-109.68.1, apache2-mod_php7 7.0.7-50.88.1, apache2-mod_php7 7.2.34-150000.4.103.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
100%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2019-11043 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Mar 25, 2022 | Apr 15, 2022 | Known |
| Industry KEV feed | Dec 24, 2019 | Apr 15, 2022 | Known |
| CIRCL KEV | Mar 25, 2022 | Apr 15, 2022 | Known |
| ENISA EUVD | Mar 25, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
1,372 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| PHPPHP | >= 7.1.x | 7.1.33 |
| Software CollectionsRedhat | 1.0 | n/a |
| Tenable.scTenable | See advisory | 5.19.0 |
| Ubuntu LinuxCanonical | 12.04, 14.04, 16.04, 18.04, 19.04, 19.10 | n/a |
| Debian LinuxDebian | 10.0, 9.0 | n/a |
Patched Releases
apache2-mod_php5
5.5.14-109.68.1
apache2-mod_php7
7.0.7-50.88.1, 7.2.34-150000.4.103.1, 7.2.5-4.46.1, 7.2.5-lp150.2.29.2, 7.2.5-lp151.6.13.1
apache2-mod_php72
7.2.5-1.29.1
apcu-panel
5.1.12-2.module+el8.1.0+5443+bc1aeb77, 5.1.17-1.module+el8.1.0+5441+020cccf5
libzip
1.5.1-2.module_el8.4.0+2228+7c76a223, 1.5.1-2.module+el8.1.0+5443+bc1aeb77, 1.5.1-2.module+el8.4.0+413+c9202dda, 1.5.2-1.module_el8.4.0+2229+b272fdef, 1.5.2-1.module+el8.1.0+5441+020cccf5, 1.5.2-1.module+el8.4.0+414+2e7afcdd
libzip-devel
1.5.1-2.module+el8.1.0+5443+bc1aeb77, 1.5.2-1.module+el8.1.0+5441+020cccf5
libzip-tools
1.5.1-2.module+el8.1.0+5443+bc1aeb77, 1.5.2-1.module+el8.1.0+5441+020cccf5
PHP
0:5.3.3-50.el6_10, 0:5.4.16-46.1.el7_7, 5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.11-1, 7.3.5-5.module+el8.1.0+5441+020cccf5, 7.1.33, 7.2.24, 7.3.11
php-bcmath
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-cli
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-common
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-dba
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-dbg
7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-devel
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-embedded
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-enchant
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-fpm
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-gd
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-gmp
7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-imap
5.3.3-50.el6_10
php-intl
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-json
7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-ldap
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-mbstring
5.3.3-50.el6_10, 5.4.16-46.1.el7_7, 5.4.16-46.amzn2.0.2, 7.2.11-4.module+el8.1.0+5443+bc1aeb77, 7.3.5-5.module+el8.1.0+5441+020cccf5
php-mysql
5.3.3-50.el6_10, 5.4.16-46.1.el7_7
Timeline
Publicly disclosed
Oct 28, 2019
Added to Industry KEV feed
Dec 24, 2019
Added to CISA KEV
Mar 25, 2022
Added to CIRCL KEV
Mar 25, 2022
Added to ENISA EUVD
Mar 25, 2022
Last updated
Aug 7, 2026
Weakness Type
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
- CWE-787 Out-of-bounds Write
References
- advisoryopenSUSE-SU-2019:2441
- advisoryopenSUSE-SU-2019:2457
- advisoryRHSA-2019:3286
- advisoryRHSA-2019:3287
- advisoryRHSA-2019:3299
FAQ
Common Questions.
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.
Affected: PHP versions >= 7.1.x; Software Collections (Redhat) versions 1.0; Tenable.sc, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 24, 2019 and is known to be used in ransomware campaigns.
Yes. It was added on Mar 25, 2022 with a federal remediation due date of Apr 15, 2022.
Public exploit code is available.
Fixed versions are available, including apache2-mod_php5 5.5.14-109.68.1, apache2-mod_php7 7.0.7-50.88.1, apache2-mod_php7 7.2.34-150000.4.103.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2019-11043 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo