Vulnerability · Published Oct 20, 2025 · Assigned by mitre
CVE-2025-54764
Medium 6.2
In plain English
A medium-severity security flaw in the mbedtls package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.2%top 87.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | mbedtls | 3.6.5-r0 | ALPINE-CVE-2025-54764 |
| Alpine:v3.21 | mbedtls | 3.6.5-r0 | ALPINE-CVE-2025-54764 |
| Alpine:v3.22 | mbedtls | 3.6.5-r0 | ALPINE-CVE-2025-54764 |
| Alpine:v3.23 | mbedtls | 3.6.5-r0 | ALPINE-CVE-2025-54764 |
| Alpine:v3.24 | mbedtls | 3.6.5-r0 | ALPINE-CVE-2025-54764 |
| Alpine:v3.24 | mbedtls3 | 3.6.5-r0 | ALPINE-CVE-2025-54764 |
| Debian:12 | mbedtls | no fix listed | DEBIAN-CVE-2025-54764 |
| Debian:13 | mbedtls | 3.6.5-0.1~deb13u1 | DEBIAN-CVE-2025-54764 |
| Debian:14 | mbedtls | 3.6.5-0.1 | DEBIAN-CVE-2025-54764 |
| Ubuntu:22.04:LTS | mbedtls | no fix listed | UBUNTU-CVE-2025-54764 |
| Ubuntu:24.04:LTS | mbedtls | no fix listed | UBUNTU-CVE-2025-54764 |
| Ubuntu:25.10 | mbedtls | no fix listed | UBUNTU-CVE-2025-54764 |
Affected products (as reported)
Weakness: CWE-208 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N