CVE-2026-25834

State: Published
Severity: 6.5 Medium
Published: Apr 1, 2026
Updated: Apr 1, 2026
Reserved: Feb 6, 2026

Description

Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L	CISA-ADP

Weaknesses

CWE-295 Improper Certificate Validation
CWE-327 Use of a Broken or Risky Cryptographic Algorithm

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://mbed-tls.readthedocs.io/en/latest/security-advisories/
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-sigalg-injection/

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