Name: CVE-2026-25834: Improper Certificate Validation
Creator: Rapid7
Published: 2026-04-01T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-25834, CWE-327, CWE-295, CVSS 6.5, EPSS 0.00217

Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.

CVSS Details

CVSS 3.1 Base Score: 6.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade mbedtlsUpgrade mbedtls3	Apr 2, 2026	Apr 1, 2026
Debian	—	Upgrade mbedtls	Sep 21, 2026	Apr 1, 2026
Freebsd	—	Upgrade mbedtls4Upgrade mbedtls3	Apr 14, 2026	Apr 10, 2026

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CVSS Details

Covered by Rapid7

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