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onyx --cves cve-2021-44790

CVE-2021-44790

score
<0.1
cvss
9.8
epss
96.8%
published
2021-12-20
kev added
—
first seen

Apache HTTP Server 2.4.51 and earlier contain a buffer overflow caused by a crafted request body in the mod_lua multipart parser, letting attackers potentially execute arbitrary code, exploit requires sending a specially crafted request.

Timeline

How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.

events2021-12-20 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoC: http://packetstormsecurity.com/files/171631/Apache-2.4.x-Buffer-Overflow.htmlXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 96.8%2026-09-23: epss 96.8%2026-09-24: epss 96.8%2026-09-25: epss 96.8%2026-09-26: epss 96.8%2026-09-27: epss 96.8%2026-09-28: epss 96.8%2026-09-29: epss 96.8%2026-09-30: epss 96.8%2026-10-01: epss 96.8%2026-10-02: epss 96.8%2026-10-03: epss 96.8%2026-10-04: epss 96.8%2026-10-05: epss 96.8%2026-10-06: epss 96.8%2026-10-07: epss 96.8%2026-10-08: epss 96.8%2026-10-09: epss 96.8%2026-10-10: epss 96.8%2026-10-11: epss 96.8%2026-10-12: epss 96.8%2026-10-13: epss 96.8%2026-10-14: epss 96.8%2026-10-15: epss 96.8%2026-10-16: epss 96.8%2026-10-18: epss 96.8%2026-10-19: epss 96.8%2026-10-20: epss 96.8%2026-10-21: epss 96.8%96.8%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx
  3. Public PoC http://packetstormsecurity.com/files/171631/Apache-2.4.x-Buffer-Overflow.html

Exploit availability

Weaknesses

CWE-787

References 20