CVE-2026-34871

State: Published
Severity: 6.7 Medium
Published: Apr 1, 2026
Updated: Apr 1, 2026
Reserved: Mar 31, 2026

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	Score	Vector	Source
3.1	6.7 Medium	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	CISA-ADP

Weaknesses

CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://mbed-tls.readthedocs.io/en/latest/security-advisories/
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-dev-random/

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