CVE-2026-25835

Name: CVE-2026-25835
Creator: NVD / NIST
Published: 2026-04-01T19:16:28.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.7/10EPSS 0.17%

Last modified Jun 17, 2026

CVE-2026-25835 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator (PRNG).. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

7.7/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.17%

6.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-335

Affected Software

Vendor	Product	Versions
Arm	Mbed Tls	>= 2.18.0, < 3.6.6
Trustedfirmware	Mbed Tls	4.0.0
Trustedfirmware	Tf-Psa-Crypto	< 1.1.0

References

https://mbed-tls.readthedocs.io/en/latest/security-advisories/Vendor Advisory
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-rng-cloning/Vendor Advisory

Timeline

Published: Apr 1, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is 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).

How severe is CVE-2026-25835?

CVE-2026-25835 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25835?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25835?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST