Out-of-bounds Write Affecting swupdate package, versions <2022.12+dfsg-1


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
1.49% (74th percentile)

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  • Snyk IDSNYK-ECHOLATEST-SWUPDATE-20877399
  • published13 Oct 2026
  • disclosed8 Feb 2021

Introduced: 8 Feb 2021

CVE-2021-26528  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Echo:latest swupdate to version 2022.12+dfsg-1 or higher.

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.

The mg_http_serve_file function in Cesanta Mongoose HTTP server 7.0 is vulnerable to remote OOB write attack via connection request after exhausting memory pool.

CVSS Base Scores

version 3.1