CVE-2025-54764 Information disclosure in n/a

What is CVE-2025-54764?

CVE-2025-54764 is a medium-severity vulnerability in Arm Mbed Tls, published on 20 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-208

Which versions are affected by CVE-2025-54764?

It affects 1 product.

Products include Arm Mbed Tls.

How do I fix CVE-2025-54764?

Upgrade to a fixed version.

Is CVE-2025-54764 being exploited?

There is no known exploitation of CVE-2025-54764 in the wild and no public exploit code.

Other vulnerabilities in Arm Mbed Tls

• CVE-2026-34877 Deserialization in n/a Critical 9.8
• CVE-2022-46393 Memory corruption in n/a Critical 9.8
• CVE-2021-44732 Use after free in n/a Critical 9.8
• CVE-2017-18187 Integer overflow in n/a Critical 9.8
• CVE-2018-0487 Memory corruption in ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0 Critical 9.8

All Arm Mbed Tls vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2025-54764, DEBIAN-CVE-2025-54764, GHSA-6237-9hpw-gcm6, JLSEC-2025-232, UBUNTU-CVE-2025-54764.