SEPTEMBER 28, 2026
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Case File

CVE-2021-44790

CRITICAL · CVSS 9.8 EPSS 97.11% Public Exploit

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

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Apache. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 97.1% probability of exploitation in the next 30 days.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-44790
Severity
CRITICAL
CVSS
9.8
EPSS
97.11%
Apache

Original NVD Description

A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier.

Related CVEs

Other vulnerabilities affecting the same vendor(s)