CVE-2026-32661 CRITICAL

CVE-2026-32661

Vendor Canon Marketing Japan Inc.
Product GUARDIANWALL MailSuite (On-premises version)
Weakness CWE-121
Published May 13, 2026
Last update May 13, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 13, 2026 CVE published
May 13, 2026 Record updated