CVE-2020-11984

CRITICALNVD 9.89.8—

9.8

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

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 99.0%
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 / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	apache2-utils (2.4.18-2ubuntu3.17) @ xenial	2026-05-27	ubuntu
ubuntu	uwsgi-plugin-ldap (2.0.12-5ubuntu3.2+esm1) @ xenial	2026-05-27	ubuntu
ubuntu	uwsgi-plugin-ldap (2.0.15-10.2ubuntu2.2) @ bionic	2026-05-27	ubuntu
redhat	httpd:2.4-8040020210127115317.9f9e2e7e	2021-05-18	redhat
redhat	httpd24-httpd-0:2.4.34-22.el7	2020-12-01	redhat
redhat	httpd	2020-10-28	redhat
redhat	jbcs-httpd24-openssl-chil-0:1.0.0-1.jbcs.el7	2020-10-28	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.

Weakness Classification(1)

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

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

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 6× in last 7d / 6× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 00:31 UTCEG score recompute
2026-05-27 00:31 UTCVendor advisory
2026-05-27 00:31 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

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 99.0% 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-11984

Explore →

Is Your Infrastructure Affected by CVE-2020-11984?

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CVE-2020-11984

Published

Last Modified

Advisory Details (8)

Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Project

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

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

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

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

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

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

Packet Storm

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-11984?

Same vendor

Same CWE

CVE-2020-11984

📅 Published

🔄 Last Modified

📋 Advisory Details (8)

Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Project

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

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

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

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

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

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

Packet Storm

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-11984?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

Advisory Details (8)

Frequently asked(5)

Related CVEs(same vendor + same CWE)