CVE-2026-32661CRITICAL 9.8EPSS p37.1%

CVE-2026-32661CVE-2026-32661

Description

Stack-based buffer overflow vulnerability exists in GUARDIANWALL MailSuite and GUARDIANWALL Mail Security Cloud (SaaS version). If a remote attacker sends a specially crafted request to the product's web service, arbitrary code may be executed when the product is configured to run pop3wallpasswd with grdnwww user privilege.

Scoring

CVSS 3.09.8 (CRITICAL)
VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.47% probability of exploitation · percentile 37.1% · 2026-06-19T12:03:05Z
Published2026-05-13
Last modified2026-05-13

Underlying weaknesses· 1

CWE-121

References

  1. https://jvn.jp/en/jp/JVN35567473/
  2. https://security-support.canon-its.jp/info_and_news/show/804?site_domain=GUARDIANWALL

1

TypeTargetConfidenceTier
WeaknessStack-based Buffer Overflowcwe-1210%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.