AUGUST 5, 2026
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Case File

CVE-2021-44224

HIGH · CVSS 8.2 EPSS 82.30%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-20 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.2. It affects Apache. Its EPSS score suggests a 82.3% probability of exploitation in the next 30 days.

CVE
CVE-2021-44224
Severity
HIGH
CVSS
8.2
EPSS
82.30%
Apache

Original NVD Description

A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included).

Related CVEs

Other vulnerabilities affecting the same vendor(s)