CVE-2026-34871
MEDIUMCVSS 6.7/10EPSS 0.19%
Last modified
CVE-2026-34871 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. 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).. EPSS estimates a 0.19% chance of exploitation in the next 30 days.
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).
Metrics
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Arm | Mbed Tls | < 3.6.6 |
| Trustedfirmware | Tf-Psa-Crypto | < 1.1.0 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-34871?
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 severe is CVE-2026-34871?
CVE-2026-34871 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2026-34871?
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-2026-34871?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST