CVE-2021-43666

7.5 HIGH

Published: March 24, 2022 Modified: December 02, 2025

Description

A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/ARMmbed/mbedtls/issues/5136

Source: cve@mitre.org

Exploit Issue Tracking Third Party Advisory

https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html

Source: cve@mitre.org

Mailing List Third Party Advisory

https://github.com/ARMmbed/mbedtls/issues/5136

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit Issue Tracking Third Party Advisory

https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing List Third Party Advisory

https://lists.debian.org/debian-lts-announce/2025/06/msg00034.html

Source: af854a3a-2127-422b-91ae-364da2661108

5 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

0.2%

36th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-130

Affected Vendors

arm debian

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