Improper Verification of Source of a Communication Channel Affecting swupdate package, versions *


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.72% (53rd percentile)

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  • Snyk IDSNYK-ECHOLATEST-SWUPDATE-20877387
  • published13 Oct 2026
  • disclosed23 Feb 2026

Introduced: 23 Feb 2026

CVE-2026-2967  (opens in a new tab)
CWE-940  (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 security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is reported as difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Base Scores

version 3.1