CVE-2026-25835 Affecting mbedtls package, versions <3.6.6-0.1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-MBEDTLS-15929445
  • published8 Apr 2026
  • disclosed1 Apr 2026

Introduced: 1 Apr 2026

CVE-2026-25835  (opens in a new tab)

How to fix?

Upgrade Debian:unstable mbedtls to version 3.6.6-0.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mbedtls package and not the mbedtls package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator (PRNG).

CVSS Base Scores

version 3.1