Is CVE-2021-36160 in the CISA KEV catalog?

No. CVE-2021-36160 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-36160?

CVE-2021-36160 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-36160?

CVE-2021-36160 has an EPSS score of 62.89% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-36160?

Upgrade apache2 on debian 11 to 2.4.51-1~deb11u1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-36160

HIGHEPSS 99th pctl

7.5

CVSS v3

NVD

Description

A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).

CWE-125Out-of-bounds Read

How to fix

Remediation Available

apache2Debian

Fixed in:2.4.51-1~deb11u1CVE-2021-36160

Fixed in:2.4.49-1CVE-2021-36160

apache2Ubuntu

Fixed in:2.4.29-1ubuntu4.17USN-5090-1

Fixed in:2.4.41-4ubuntu3.5USN-5090-1

apache2-binUbuntu

Fixed in:2.4.29-1ubuntu4.17USN-5090-1

Fixed in:2.4.41-4ubuntu3.5USN-5090-1

httpdWindows application

Affected:2.4.30 2.4.49Fixed in:2.4.49Apache Lounge

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

62.89%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix

Embed a live status badge for CVE-2021-36160

Markdown

[![CVE-2021-36160](https://tridentstack.com/cve/badge/CVE-2021-36160.svg)](https://tridentstack.com/cve/CVE-2021-36160)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-36160"><img src="https://tridentstack.com/cve/badge/CVE-2021-36160.svg" alt="CVE-2021-36160"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-01.