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 mbe — CVE-2025-27809
Date
Source
MSRC
MSRC
Vendor
Microsoft
Microsoft
Threat
medium
medium
CVSS
5.4
5.4
Summary
Advisory 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… Vendor: Microsoft. Source: MSRC. Threat: medium. CVSS 5.4. See the official…
What to do
General, cautious steps (verify details in the official source):
- Review exposure and plan remediation based on risk and environment.
- Identify affected product versions in your inventory and verify whether you are impacted.
- Apply vendor patches/updates or recommended mitigations as soon as available.
- Read the official advisory for exact affected versions and remediation steps.