CVE-2025-54764

low-risk
Published 2025-10-20

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.

Do I need to act?

-
0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.2/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Arm

References (2)

Exploit https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-a...
Vendor Advisory https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/
25
/ 100
low-risk
Severity 20/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal