Detections
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Echo: tcl8.6: security update to 8.6.16+dfsg-1+e1

high Tenable Self-Hosted Container Security Plugin ID 462542

Description

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

 - In Tcl 8.6.11, a format string vulnerability in nmakehlp.c might allow code execution via a crafted file.
 NOTE: multiple third parties dispute the significance of this finding (CVE-2021-35331)

Solution

Update the tcl8.6 library and its related packages to version 8.6.16+dfsg-1+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2021-35331

Plugin Details

Severity: High

ID: 462542

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-35331

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/9/2026

Vulnerability Publication Date: 7/5/2021

Reference Information

CVE: CVE-2021-35331