VULNERABILITY INTELLIGENCE

CVE-2021-40516

CVSS score7.5 HIGH

EPSS probability1.59%

CISA KEVNot currently listed

Published2021-09-05

Last modified2026-06-17

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

Description

WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin.

Weakness classification

nvd@nist.gov: CWE-125

Primary references

cve@mitre.org — Patch, Third Party Advisory
cve@mitre.org — Mailing List, Third Party Advisory
cve@mitre.org — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory