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CRITICALCVE-2026-32661Published Modified CNA jpcert

CVE-2026-32661: Stack-based buffer overflow vulnerability exists in GUARDIANWALL MailSuite and GUARDIANWALL Mail Security Cloud (SaaS version)

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.

Metrics

CVSS v4.0
9.3
Severity
CRITICAL
Fixed in
—
Affected Products
2
Affected packages
  • Canon Marketing Japan Inc. / GUARDIANWALL MailSuite (On-premises version)
    Ver 1.4.00 to Ver 2.4.26
  • Canon Marketing Japan Inc. / GUARDIANWALL Mail Security Cloud (SaaS version)
    versions before the maintenance on April 30 · 2026
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References