Improper Certificate Validation Affecting swupdate package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.21% (11th percentile)

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  • Snyk IDSNYK-ECHOLATEST-SWUPDATE-20877407
  • published13 Oct 2026
  • disclosed12 Oct 2026

Introduced: 12 Oct 2026

NewCVE-2026-109399  (opens in a new tab)
CWE-295  (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.

SWUpdate through 2026.05.1 contains an improper certificate validation vulnerability in crypto/swupdate_cms_verify_openssl.c that trusts untrusted X.509 certificates embedded in CMS SignedData for chain building. Attackers holding a signing key from a sibling intermediate under the same root can embed that intermediate in the signature to install malicious updates.

CVSS Base Scores

version 3.1