Cryptographic Issues Affecting swupdate package, versions *


Severity

Recommended
0.0
low
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.56% (45th percentile)

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  • Snyk IDSNYK-ECHOLATEST-SWUPDATE-20877386
  • published13 Oct 2026
  • disclosed23 Feb 2026

Introduced: 23 Feb 2026

CVE-2026-2966  (opens in a new tab)
CWE-310  (opens in a new tab)
CWE-330  (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. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Base Scores

version 3.1