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

critical Tenable Cloud Security Plugin ID 460604

Description

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

 - An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient
 protection of serialized SSL context or session structures allows an attacker who can modify the
 serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by
 Incorrect Use of Privileged APIs. (CVE-2026-34877)

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-2026-34877

Plugin Details

Severity: Critical

ID: 460604

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.48

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-34877

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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: 4/2/2026

Reference Information

CVE: CVE-2026-34877