Vulnerability in Arm Mbed_tls

CVE-2026-25835

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

EPSS: 0.000 (3.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-25835?
CVE-2026-25835 is a high-severity vulnerability in Arm Mbed_tls, classified under Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG). CVSS score: 7.7/10. Published 2026-04-01.
How severe is CVE-2026-25835?
High severity. CVSS v3 base score is 7.7 out of 10.