Improper Resource Shutdown or Release Affecting swupdate package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.92% (59th percentile)

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  • Snyk IDSNYK-ECHOLATEST-SWUPDATE-20877392
  • published13 Oct 2026
  • disclosed25 Apr 2026

Introduced: 25 Apr 2026

CVE-2026-6985  (opens in a new tab)
CWE-404  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest swupdate.

NVD Description

Note: Versions mentioned in the description apply only to the upstream swupdate package and not the swupdate package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A weakness has been identified in Cesanta Mongoose up to 7.20. This vulnerability affects the function handle_opt of the file /src/net_builtin.c of the component TCP Option Handler. This manipulation of the argument optlen causes infinite loop. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 7.21 is able to resolve this issue. Upgrading the affected component is advised. VulDB has contacted the vendor early and they confirmed quickly, that this issue got fixed already.

CVSS Base Scores

version 3.1