Echo: mbedtls: security update to 3.6.6-0.1+e1

medium Tenable Self-Hosted Container Security Plugin ID 460582

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- In Mbed TLS through 4.0.0, there is a compiler-induced timing side channel (in RSA and CBC/ECB decryption)
that only occurs with LLVM's select-optimize feature. TF-PSA-Crypto through 1.0.0 is also affected.
(CVE-2025-66442)

Solution

Update the mbedtls library and its related packages to version 3.6.6-0.1+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-66442

Plugin Details

Severity: Medium

ID: 460582

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.91

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2025-66442

CVSS v3

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 4.5

Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/27/2026

Vulnerability Publication Date: 4/1/2026

Reference Information

CVE: CVE-2025-66442