CVE-2026-34871
6.7
MEDIUM
CVSS 3.1
EPSS 0.01%
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).
How to fix CVE-2026-34871
To remediate CVE-2026-34871, upgrade the affected package to a fixed version below.
- Debian/mbedtls—upgrade to 2.16.9-0.1+deb11u4 or later
Is CVE-2026-34871 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.16.9-0.1+deb11u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.7 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |