CVE-2026-32661
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | canon marketing japan inc. |
| Product | guardianwall mailsuite (on-premises version) |
| Published | May 13, 2026 |
| Last Updated | May 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Affected Versions
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