Detections
Analytics

Echo: mbedtls: security update to 3.6.6

critical Tenable Cloud Security Plugin ID 464934

Description

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

 - An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a
 TLS 1.3 session. (CVE-2026-34873)

Solution

Update the mbedtls library and its related packages to version 3.6.6 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-34873

Plugin Details

Severity: Critical

ID: 464934

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.41

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-34873

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2026-34873