CVE-2025-59438
Publication date 21 October 2025
Last updated 16 January 2026
Ubuntu priority
Description
Mbed TLS through 3.6.4 has an Observable Timing Discrepancy.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| mbedtls | 25.10 questing |
Vulnerable
|
| 24.04 LTS noble | Ignored changes too intrusive | |
| 22.04 LTS jammy | Ignored changes too intrusive | |
| 20.04 LTS focal | Ignored changes too intrusive | |
| 18.04 LTS bionic | Ignored changes too intrusive | |
| 16.04 LTS xenial | Ignored changes too intrusive |
Patch details
| Package | Patch details |
|---|---|
| mbedtls |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.3 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |