CVE-2025-27809

State: Published
Severity: 5.4 Medium
Published: Mar 25, 2025
Updated: Mar 25, 2025
Reserved: Mar 7, 2025

Description

Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted certificates for arbitrary hostnames unless the TLS client application calls mbedtls_ssl_set_hostname.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N	mitre

Weaknesses

CWE-1188 Initialization of a Resource with an Insecure Default

Affected Products

Product	Versions
mbedtlsMbed	before 2.28.10Affected 3.0.0 to before 3.6.3Affected

References

https://github.com/Mbed-TLS/mbedtls/releases
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-03-1/
https://mastodon.social/@bagder/114219540623402700
https://github.com/Mbed-TLS/mbedtls/issues/466

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