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CVE-2025-54764

Good to know:

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Date: October 19, 2025

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.

Severity Score

Related Resources (4)

https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-10-ssbleed-mstep/
https://nvd.nist.gov/vuln/detail/CVE-2025-54764
https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/
https://www.mend.io/vulnerability-database/CVE-2025-54764

Severity Score

Weakness Type (CWE)

Observable Timing Discrepancy

CWE-208

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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