VULNERABILITY INTELLIGENCE

CVE-2021-33586

CVSS score4.3 MEDIUM

EPSS probability0.89%

CISA KEVNot currently listed

Published2021-05-27

Last modified2026-06-17

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

Description

InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the "malformed PONG" issue.

Weakness classification

nvd@nist.gov: CWE-732

Primary references

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