Vulnerability in Arm Mbed Tls

CVE-2025-54764

Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd.

EPSS: 0.002 (10.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/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 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2025-54764?: CVE-2025-54764 is a medium-severity vulnerability in Arm Mbed Tls, classified under CWE-208. CVSS score: 6.2/10. Published 2025-10-20.
How severe is CVE-2025-54764?: Medium severity. CVSS v3 base score is 6.2 out of 10.