CVE-2026-32661

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Canon Marketing Japan Inc.GUARDIANWALL MailSuite (On-premises version)Ver 1.4.00 to Ver 2.4.26affected
Canon Marketing Japan Inc.GUARDIANWALL Mail Security Cloud (SaaS version)versions before the maintenance on April 30affected
Canon Marketing Japan Inc.GUARDIANWALL Mail Security Cloud (SaaS version)2026affected

Weaknesses

  • CWE-121: Stack-based buffer overflow

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References