CVE-2021-22945

CriticalCVSS 9.1/10Last modified Oct 14, 2026

Description

When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weakness enumeration

CWE-415

Affected software

No affected versions have been published.

Timeline

Published: Sep 23, 2021
Last modified: Oct 14, 2026
NVD status: Modified

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