What is CVE-2026-3503?

CVE-2026-3503 is a medium-severity vulnerability in Wolfssl, classified under Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG). CVSS score: 5.2/10. Published 2026-03-19.

How severe is CVE-2026-3503?

Medium severity. CVSS v3 base score is 5.2 out of 10.

Vulnerability in Wolfssl

CVE-2026-3503

Protection mechanism failure in wolfCrypt post-quantum implementations (ML-KEM and ML-DSA) in wolfSSL on ARM Cortex-M microcontrollers allows a physical attacker to compromise key material and/or cryptographic outcomes via induced transien…

EPSS: 0.000 (0.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.2 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Wolfssl
Wolfssl Inc. (Wolfcrypt) — versions 5.8.2

Weakness classification (CWE)

CWE-335 — Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)

References

facts@wolfssl.com (x_refsource_CONFIRM, Patch, Issue Tracking)

Frequently asked questions

What is CVE-2026-3503?: CVE-2026-3503 is a medium-severity vulnerability in Wolfssl, classified under Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG). CVSS score: 5.2/10. Published 2026-03-19.
How severe is CVE-2026-3503?: Medium severity. CVSS v3 base score is 5.2 out of 10.