CVE-2021-33586

MediumCVSS 4.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
May 27, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-33586: Medium severity, CVSS 4.3 | Vulnix