CVE-2025-27809

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-27809
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.

5.4 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://github.com/Mbed-TLS/mbedtls/releases Release Notes
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-03-1/ Third Party Advisory
https://github.com/Mbed-TLS/mbedtls/issues/466 Issue Tracking
https://mastodon.social/@bagder/114219540623402700 Not Applicable
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
History

17 Jul 2025, 15:57

Type Values Removed Values Added
References () https://github.com/Mbed-TLS/mbedtls/releases - () https://github.com/Mbed-TLS/mbedtls/releases - Release Notes
References () https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-03-1/ - () https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-03-1/ - Third Party Advisory
References () https://github.com/Mbed-TLS/mbedtls/issues/466 - () https://github.com/Mbed-TLS/mbedtls/issues/466 - Issue Tracking
References () https://mastodon.social/@bagder/114219540623402700 - () https://mastodon.social/@bagder/114219540623402700 - Not Applicable
CPE cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
First Time Arm
Arm mbed Tls

27 Mar 2025, 16:45

Type Values Removed Values Added
Summary
  • (es) Mbed TLS anterior a 2.28.10 y 3.x anterior a 3.6.3, en el lado del cliente, acepta servidores que tienen certificados confiables para nombres de host arbitrarios a menos que la aplicación cliente TLS llame a mbedtls_ssl_set_hostname.

25 Mar 2025, 17:16

Type Values Removed Values Added
References
  • () https://github.com/Mbed-TLS/mbedtls/issues/466 -
  • () https://mastodon.social/@bagder/114219540623402700 -

25 Mar 2025, 06:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-03-25 06:15

Updated : 2025-07-17 15:57

NVD link : CVE-2025-27809

Mitre link : CVE-2025-27809

CVE.ORG link : CVE-2025-27809

JSON object : View

Products Affected

arm

  • mbed_tls
CWE
CWE-1188

Initialization of a Resource with an Insecure Default