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CVE-2025-27809

Good to know:

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Date: March 24, 2025

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.

Severity Score

Related Resources (8)

https://mastodon.social/@bagder/114219540623402700
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-03-1/
https://nvd.nist.gov/vuln/detail/CVE-2025-27809
https://security.alpinelinux.org/vuln/CVE-2025-27809
https://github.com/Mbed-TLS/mbedtls/releases
https://github.com/Mbed-TLS/mbedtls/issues/466
https://security-tracker.debian.org/tracker/CVE-2025-27809
https://www.mend.io/vulnerability-database/CVE-2025-27809

Severity Score

Weakness Type (CWE)

Initialization of a Resource with an Insecure Default

CWE-1188

Top Fix

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Upgrade Version

Upgrade to version https://github.com/Mbed-TLS/mbedtls.git - mbedtls-2.28.10;https://github.com/Mbed-TLS/mbedtls.git - mbedtls-3.6.3;https://github.com/Mbed-TLS/mbedtls.git - v2.28.10;https://github.com/Mbed-TLS/mbedtls.git - v3.6.3

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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