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.
CVE-2019-11043
“▲” beside the score: it is higher than NVD's CVSS score.
Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.7 retained for reference. Confidence: HIGH.
Also known asEUVD-2019-2751 (ENISA EUVD) · GHSA-6qjm-m8fp-j2mm (GitHub Security Advisories)Source: ENISA EUVD
- Actively exploited in the wild (CISA-KEV) — the reason this is sooner than the SSVC decision on this page at low or medium mission impact
A fix is available — apply it.
- CVSS v3
- 8.7
- EG Score
- 9.8CRITICALhigh confidence
- EG Risk
- 84EG Risk 84/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity98% × 45%Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation100% × 40%Fixed at 100% for a CISA KEV listing: EchelonGraph's rule.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Attend at medium and Act at high mission impact.Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact. - EPSS PROB
- 99.8%
- EPSS %ILE
- 99th
- KEV
- ⚠ Exploited
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 99.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- CISA KEV and EG-KEV Tier 1 (exploited in the wild)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Attend at medium mission impactTrack at low, Attend at medium and Act at high mission impact.CISA BOD 26-04: 3 days & forensic triage if the affected system is publicly exposed; 14 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Attend at medium and Act at high mission impact.
A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.
Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)3 days & forensic triage if the affected system is publicly exposed; 14 days if it is not.
The score's inputs: In CISA KEV yes (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
CISA required action“Apply updates per vendor instructions.”
Quoted verbatim from CISA's Known Exploited Vulnerabilities catalog. CISA directs it at US federal civilian executive branch agencies under Binding Operational Directive (BOD) 26-04, which replaced BOD 22-01 on 10 June 2026; it is not EchelonGraph's advice. CISA's notes: https://nvd.nist.gov/vuln/detail/CVE-2019-11043
Published
October 28, 2019
Last Modified
November 3, 2025
Advisory Details (8)
Auto-updated Nov 2, 2026Affected: Red Hat Enterprise Linux 8.
https://access.redhat.com/errata/RHSA-2019:3735Affected: Red Hat Enterprise Linux 6.
https://access.redhat.com/errata/RHSA-2019:3287Affected: Red Hat Enterprise Linux 7.
https://access.redhat.com/errata/RHSA-2019:3286Full Disclosure: APPLE-SA-2020-1-28-2 macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra
http://seclists.org/fulldisclosure/2020/Jan/40Patch Availability(11)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libphp5-embed (5.5.9+dfsg-1ubuntu4.29+esm6) @ trusty | 2026-11-01 | ubuntu |
| ubuntu | php7.0-zip (7.0.33-0ubuntu0.16.04.7) @ xenial | 2026-11-01 | ubuntu |
| redhat | php-0:5.4.16-46.1.el7_6 | 2020-07-07 | redhat |
| redhat | php:7.2-8000020191113103901.5d58a046 | 2020-02-03 | redhat |
| redhat | php:7.2-8010020191030112723.dcfb48bd | 2019-11-06 | redhat |
| redhat | php:7.3-8010020191030161321.dcfb48bd | 2019-11-06 | redhat |
| redhat | rh-php70-php-0:7.0.27-2.el7 | 2019-11-06 | redhat |
| redhat | rh-php71-php-0:7.1.30-2.el7 | 2019-11-01 | redhat |
| redhat | rh-php72-php-0:7.2.24-1.el7 | 2019-11-01 | redhat |
| redhat | php-0:5.3.3-50.el6_10 | 2019-10-31 | redhat |
| redhat | php-0:5.4.16-46.1.el7_7 | 2019-10-31 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(3 across 3 ecosystems)
Debian:10(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| php7.3 | 7.3.10-1 ... 7.3.9-1~deb10u1 (6 versions) |
| — |
Debian:8(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| php5 | 5.6.11+dfsg-1 ... 5.6.9+dfsg-1 (52 versions) |
| — |
Debian:9(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| php7.0 | 7.0.19-1 ... 7.0.33-0+deb9u5 (21 versions) |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(11)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Red HatRHSA-2019:3286CRITICAL2019-10-24
RHSA-2019:3286 — Critical
- Red HatRHSA-2019:3287CRITICAL2019-10-24
RHSA-2019:3287 — Critical
- Red HatRHSA-2019:3299CRITICAL2019-10-24
RHSA-2019:3299 — Critical
- Red HatRHSA-2019:3300CRITICAL2019-10-24
RHSA-2019:3300 — Critical
- Red HatRHSA-2019:3724CRITICAL2019-10-24
RHSA-2019:3724 — Critical
- Red HatRHSA-2019:3735CRITICAL2019-10-24
RHSA-2019:3735 — Critical
- Red HatRHSA-2019:3736CRITICAL2019-10-24
RHSA-2019:3736 — Critical
- Red HatRHSA-2020:0322CRITICAL2019-10-24
RHSA-2020:0322 — Critical
- Red HatRHSA-2020:2835CRITICAL2019-10-24
RHSA-2020:2835 — Critical
- UbuntuUSN-4166-1MEDIUM
PHP vulnerability
- UbuntuUSN-4166-2MEDIUM
PHP vulnerability
Data Freshness Timeline
(refreshed 20× in last 7d / 164× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 1,622 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 1,522 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 21:04 UTCEG score recompute
- 2026-11-01 21:04 UTCVendor advisory
- 2026-11-01 21:04 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-31 20:45 UTCEG score recompute
- 2026-10-31 20:45 UTCVendor advisory
- 2026-10-31 20:44 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-30 20:25 UTCEG score recompute
- 2026-10-30 20:25 UTCVendor advisory
- 2026-10-30 20:25 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-30 16:28 UTCEPSS rescoreEPSS 99.8% · 99th percentile
- 2026-10-29 20:06 UTCEG score recompute
- 2026-10-29 20:06 UTCVendor advisory
- 2026-10-29 20:06 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-29 16:28 UTCEPSS rescoreEPSS 99.8% · 99th percentile
- 2026-10-28 19:46 UTCEG score recompute
- 2026-10-28 19:46 UTCVendor advisory
- 2026-10-28 19:46 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-27 19:27 UTCEG score recompute
- 2026-10-27 19:27 UTCVendor advisory
- 2026-10-27 19:27 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-26 19:08 UTCEG score recompute
- 2026-10-26 19:08 UTCVendor advisory
- 2026-10-26 19:08 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-25 18:46 UTCEG score recompute
- 2026-10-25 18:46 UTCVendor advisory
Show 75 moreShow fewer
- 2026-10-25 18:45 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-25 16:27 UTCEPSS rescoreEPSS 99.7% · 99th percentile
- 2026-10-24 18:26 UTCEG score recompute
- 2026-10-24 18:26 UTCVendor advisory
- 2026-10-24 18:26 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-23 18:06 UTCEG score recompute
- 2026-10-23 18:06 UTCVendor advisory
- 2026-10-23 18:06 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-22 17:47 UTCEG score recompute
- 2026-10-22 17:47 UTCVendor advisory
- 2026-10-22 17:47 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-21 17:25 UTCEG score recompute
- 2026-10-21 17:25 UTCVendor advisory
- 2026-10-21 17:25 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-21 16:27 UTCEPSS rescoreEPSS 99.7% · 99th percentile
- 2026-10-20 17:06 UTCEG score recompute
- 2026-10-20 17:06 UTCVendor advisory
- 2026-10-20 17:05 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-20 16:27 UTCEPSS rescoreEPSS 99.7% · 99th percentile
- 2026-10-19 16:46 UTCEG score recompute
- 2026-10-19 16:46 UTCVendor advisory
- 2026-10-19 16:46 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-19 16:27 UTCEPSS rescoreEPSS 99.7% · 99th percentile
- 2026-10-18 16:27 UTCVendor advisory
- 2026-10-18 16:27 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-18 09:28 UTCEG score recompute
- 2026-10-18 09:28 UTCVendor advisory
- 2026-10-18 09:28 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-17 09:09 UTCEG score recompute
- 2026-10-17 09:09 UTCVendor advisory
- 2026-10-17 09:09 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-16 08:50 UTCEG score recompute
- 2026-10-16 08:50 UTCVendor advisory
- 2026-10-16 08:50 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-15 08:30 UTCEG score recompute
- 2026-10-15 08:30 UTCVendor advisory
- 2026-10-15 08:30 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-14 08:10 UTCEG score recompute
- 2026-10-14 08:10 UTCVendor advisory
- 2026-10-14 08:09 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-13 16:27 UTCEPSS rescoreEPSS 99.7% · 99th percentile
- 2026-10-13 07:49 UTCVendor advisory
- 2026-10-13 07:49 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-12 20:04 UTCEG score recompute
- 2026-10-12 07:29 UTCVendor advisory
- 2026-10-12 07:28 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-12 03:02 UTCVendor advisory
- 2026-10-12 03:02 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 22:35 UTCEG score recompute
- 2026-10-11 22:35 UTCVendor advisory
- 2026-10-11 22:35 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 18:11 UTCEG score recompute
- 2026-10-11 18:11 UTCVendor advisory
- 2026-10-11 18:10 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 13:44 UTCEG score recompute
- 2026-10-11 13:44 UTCVendor advisory
- 2026-10-11 13:44 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 09:19 UTCVendor advisory
- 2026-10-11 09:19 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 04:52 UTCVendor advisory
- 2026-10-11 04:51 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-11 00:26 UTCVendor advisory
- 2026-10-11 00:26 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 20:00 UTCVendor advisory
- 2026-10-10 20:00 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 15:35 UTCVendor advisory
- 2026-10-10 15:34 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 11:08 UTCVendor advisory
- 2026-10-10 11:08 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 06:44 UTCVendor advisory
- 2026-10-10 06:44 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-10 02:19 UTCVendor advisory
- 2026-10-10 02:19 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
- 2026-10-09 21:55 UTCVendor advisory
- 2026-10-09 21:55 UTCGHSA enrichmentGHSA-6qjm-m8fp-j2mm · GitHub severity HIGH · GitHub CVSS 9.8
Publicly available exploits
(14 references, 10 shown)Public exploit code is referenced for this CVE (1 Metasploit module, 2 Exploit-DB entries, 9 GitHub PoCs), as are 1 Nuclei detection template, 1 GitHub checker repository. A detection template checks whether a system is affected; it is not necessarily exploit code. A GitHub repository named or described as a checker or scanner checks whether a system is affected; it is not necessarily exploit code. Defenders should treat patch urgency accordingly.
- Exploit-DBEDB-48182✓ verifiedPublished Mar 9, 2020
PHP-FPM - Underflow Remote Code Execution (Metasploit)
Open source ↗ - Metasploitexploit/multi/http/php_fpm_rce✓ verifiedPublished Mar 5, 2020
PHP-FPM Underflow RCE
Open source ↗ - Nucleihttp/cves/2019/CVE-2019-11043.yamlPublished Aug 25, 2026
PHP-FPM Path Info Buffer Underflow - Remote Code Execution
Open source ↗ - GitHub PoCkriskhub/CVE-2019-11043Published May 5, 2020
This repository provides a dockerized infrastructure and a python implementation of the CVE-2019-11043 exploit.
Open source ↗ - GitHub PoCk8gege/CVE-2019-11043Published Nov 11, 2019
Ladon POC Moudle CVE-2019-11043 (PHP-FPM + Ngnix)
Open source ↗ - GitHub PoC0th3rs-Security-Team/CVE-2019-11043Published Nov 6, 2019
CVE-2019-11043 PHP7.x RCE
Open source ↗ - GitHub checkerypereirareis/docker-CVE-2019-11043Published Oct 30, 2019
Docker image and commands to check CVE-2019-11043 vulnerability on nginx/php-fpm applications.
Open source ↗ - GitHub PoChuowen/CVE-2019-11043Published Oct 29, 2019
Python exp for CVE-2019-11043
Open source ↗ - Exploit-DBEDB-47553Published Oct 28, 2019
PHP-FPM + Nginx - Remote Code Execution
Open source ↗ - GitHub PoCtheMiddleBlue/CVE-2019-11043Published Oct 28, 2019
(PoC) Python version of CVE-2019-11043 exploit by neex
Open source ↗
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:10:php7.3
- CVE-2020-7060NVD 6.5EG 9.1EPSS p95CRITICAL
- CVE-2020-7059NVD 6.5EG 9.1EPSS p94CRITICAL
- CVE-2019-11040EG 9.1EPSS p91CRITICAL
- CVE-2019-11039EG 9.1CRITICAL
- CVE-2019-11036EG 9.1EPSS p94CRITICAL
- CVE-2020-7067EG 7.5EPSS p91HIGH
- CVE-2020-7062EG 7.5HIGH
- CVE-2019-11042EG 7.1EPSS p91HIGH
- CVE-2019-11041EG 7.1EPSS p91HIGH
- CVE-2020-7064EG 6.5EPSS p91MEDIUM
Same vendor
10 shownredhat:RHSA-2019:3299
- CVE-2019-9023EG 9.8EPSS p95CRITICAL
- CVE-2019-9021EG 9.8EPSS p96CRITICAL
- CVE-2019-9020EG 9.8EPSS p96CRITICAL
- CVE-2016-10166EG 9.8EPSS p96CRITICAL
- CVE-2019-11040EG 9.1EPSS p91CRITICAL
- CVE-2019-11039EG 9.1CRITICAL
- CVE-2019-11036EG 9.1EPSS p94CRITICAL
- CVE-2019-11035EG 9.1EPSS p91CRITICAL
- CVE-2019-11034EG 9.1EPSS p91CRITICAL
- CVE-2019-6977NVD 8.8EG 9.0EPSS p99CRITICAL
Same CWE
10 shownCWE-120 · CWE-787
Frequently asked(6)
What is CVE-2019-11043?
When was CVE-2019-11043 made public?
Is CVE-2019-11043 actively exploited?
What is the CVSS score of CVE-2019-11043?
Which products are affected by CVE-2019-11043?
How do I remediate CVE-2019-11043?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-11043
Is Your Infrastructure Affected by CVE-2019-11043?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.