CVE-2020-11984

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 90.0%, top 0% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this weekElevated
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • 220 internet-exposed hosts are running an affected version right now
  • High exploitation likelihood — EPSS 90%
CISA-KEV: Not listedEPSS: 90%CVSS: 9.8Exploit: NoneExposed: 220

A fix is available — apply it.

Apache HTTP server 2.4.32 to 2.4.44 mod_proxy_uwsgi info disclosure and possible RCE

Live · internet exposure

220 internet-exposed hosts are running an affected version of CVE-2020-11984 right now.

across 38 countries (United States, Germany, France, Japan, United Kingdom)top: http_server
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
85(Track*)
EG Risk 85/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation90% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
99.8%
KEV
Not listed

Published

August 7, 2020

Last Modified

November 21, 2024

Advisory Details (8)

Auto-updated May 27, 2026
⚠️ Active exploitation confirmed. Patch available.
generic Patch Available🔴 Active Exploitation

Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Project

https://httpd.apache.org/security/vulnerabilities_24.html
generic

oss-security - Re: CVE-2020-11984: Apache httpd: mod_uwsgi buffer overlow

http://www.openwall.com/lists/oss-security/2020/08/17/2
generic

oss-security - Re: CVE-2020-11984: Apache httpd: mod_uwsgi buffer overlow

http://www.openwall.com/lists/oss-security/2020/08/10/5
generic Patch Available

oss-security - Re: CVE-2020-11984: Apache httpd: mod_uwsgi buffer overlow

http://www.openwall.com/lists/oss-security/2020/08/08/9
generic

oss-security - Re: CVE-2020-11984: Apache httpd: mod_uwsgi buffer overlow

http://www.openwall.com/lists/oss-security/2020/08/08/8
generic

oss-security - Re: CVE-2020-11984: Apache httpd: mod_uwsgi buffer overlow

http://www.openwall.com/lists/oss-security/2020/08/08/10
generic Patch Available

oss-security - Re: CVE-2020-11984: Apache httpd: mod_uwsgi buffer overlow

http://www.openwall.com/lists/oss-security/2020/08/08/1
generic

Packet Storm

http://packetstormsecurity.com/files/159009/Apache2-mod_proxy_uwsgi-Incorrect-Request-Handling.html

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuapache2-utils (2.4.18-2ubuntu3.17) @ xenial2026-05-27ubuntu
ubuntuuwsgi-plugin-ldap (2.0.12-5ubuntu3.2+esm1) @ xenial2026-05-27ubuntu
ubuntuuwsgi-plugin-ldap (2.0.15-10.2ubuntu2.2) @ bionic2026-05-27ubuntu
redhathttpd:2.4-8040020210127115317.9f9e2e7e2021-05-18redhat
redhathttpd24-httpd-0:2.4.34-22.el72020-12-01redhat
redhathttpd2020-10-28redhat
redhatjbcs-httpd24-openssl-chil-0:1.0.0-1.jbcs.el72020-10-28redhat

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.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(8)

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.

Data Freshness Timeline

(refreshed 7× in last 7d / 13× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-07-23 01:48 UTCEG score recompute
  2. 2026-07-22 22:33 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
  5. 2026-07-21 15:22 UTCEPSS rescore
  6. 2026-07-20 17:04 UTCEPSS rescore
  7. 2026-07-19 07:52 UTCOSV refresh
  8. 2026-07-15 16:55 UTCEPSS rescore
  9. 2026-07-09 19:06 UTCEPSS rescore
  10. 2026-07-01 15:03 UTCEPSS rescore
  11. 2026-07-01 15:03 UTCEPSS rescore
  12. 2026-07-01 13:46 UTCOSV refresh
  13. 2026-06-27 03:06 UTCEPSS rescore
  14. 2026-06-23 21:31 UTCEPSS rescore
  15. 2026-06-23 21:31 UTCEPSS rescore
  16. 2026-06-18 17:50 UTCEPSS rescore
  17. 2026-06-18 17:50 UTCEPSS rescore
  18. 2026-06-15 17:46 UTCEPSS rescore
  19. 2026-06-13 22:58 UTCEPSS rescore
  20. 2026-06-13 22:58 UTCEPSS rescore
  21. 2026-06-13 21:13 UTCOSV refresh
  22. 2026-06-12 23:09 UTCEPSS rescore
  23. 2026-06-11 13:58 UTCEPSS rescore
  24. 2026-06-10 22:16 UTCEPSS rescore
  25. 2026-06-10 22:16 UTCEPSS rescore
Show 26 more
  1. 2026-06-10 13:20 UTCEPSS rescore
  2. 2026-06-08 14:15 UTCEPSS rescore
  3. 2026-06-08 14:15 UTCEPSS rescore
  4. 2026-06-07 15:23 UTCEPSS rescore
  5. 2026-06-07 15:23 UTCEPSS rescore
  6. 2026-06-06 13:45 UTCEPSS rescore
  7. 2026-06-06 13:45 UTCEPSS rescore
  8. 2026-06-06 13:45 UTCEPSS rescore
  9. 2026-06-05 22:45 UTCEPSS rescore
  10. 2026-06-05 22:45 UTCEPSS rescore
  11. 2026-06-05 06:08 UTCEPSS rescore
  12. 2026-06-02 20:11 UTCEPSS rescore
  13. 2026-06-02 20:11 UTCEPSS rescore
  14. 2026-06-01 13:50 UTCEPSS rescore
  15. 2026-05-31 00:15 UTCEPSS rescore
  16. 2026-05-31 00:14 UTCEPSS rescore
  17. 2026-05-29 13:42 UTCEPSS rescore
  18. 2026-05-29 13:42 UTCEPSS rescore
  19. 2026-05-28 13:43 UTCEPSS rescore
  20. 2026-05-28 13:43 UTCEPSS rescore
  21. 2026-05-27 13:39 UTCEPSS rescore
  22. 2026-05-27 00:31 UTCEG score recompute
  23. 2026-05-27 00:31 UTCVendor advisory
  24. 2026-05-27 00:31 UTCGHSA enrichment
  25. 2026-05-26 07:17 UTCEPSS rescore
  26. 2026-05-26 07:17 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2020/CVE-2020-11984.yaml
    First seen Jan 1, 2020

    Apache HTTP Server - Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2020-11984?
CVE-2020-11984 is a critical vulnerability published on August 7, 2020. Apache HTTP server 2.4.32 to 2.4.44 modproxyuwsgi info disclosure and possible RCE
When was CVE-2020-11984 disclosed?
CVE-2020-11984 was first published in the National Vulnerability Database on August 7, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-11984 actively exploited?
CVE-2020-11984 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-11984?
CVE-2020-11984 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-11984?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-11984, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2020-11984

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