CVE-2026-34871

MEDIUM

Mbed TLS <3.6.6/4.x<4.1.0 - Predictable PRNG

Title source: llm
STIX 2.1

Description

An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).

Scores

CVSS v3 6.7
EPSS 0.0002
EPSS Percentile 4.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-338
Status published
Products (2)
arm/mbed_tls < 3.6.6
arm/tf-psa-crypto < 1.1.0
Published Apr 01, 2026
Tracked Since Apr 02, 2026