DEBIAN-CVE-2025-27809: mbedtls security update

DEBIAN-CVE-2025-27809, released March 25, 2025, fixes 1 CVE in mbedtls (version 3.6.3-1). None of them is reported as exploited. Patch Radar priority: Routine.

Routine

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

5.4

Base score, 0 to 10

Highest EPSS

0.0020

10th percentile

Fixed package versions

Product	Release	Fixed in
mbedtls	Debian 13.5 (trixie)	3.6.3-1
mbedtls	Debian 14	3.6.3-1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Routine	CVE-2025-27809	mbedtls: Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted certificates for...	5.4	0.0020	None reported

Also fixes CVE-2025-27809

OPENSUSE-SU-2026:21144-1
mbedtls on opensuse-leap 16.0
OPENSUSE-SU-2026:21145-1
mbedtls-2 on opensuse-leap 16.0

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2025-27809

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