Vulnerability in Arm Mbed Tls

CVE-2025-59438

Mbed TLS through 3.6.4 has an Observable Timing Discrepancy.

EPSS: 0.002 (16.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Arm Mbed_tls
N/a — versions n/a

Weakness classification (CWE)

CWE-208

References

cve@mitre.org (Vendor Advisory)
cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2025-59438?: CVE-2025-59438 is a medium-severity vulnerability in Arm Mbed Tls, classified under CWE-208. CVSS score: 5.3/10. Published 2025-10-21.
How severe is CVE-2025-59438?: Medium severity. CVSS v3 base score is 5.3 out of 10.