CVE-2026-32661

CRITICAL EPSS 37.3%

Published May 13, 20261mo ago · Modified Jun 17, 20261w ago

9.3 CVSS 4.0

Critical

Published May 13, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

9.3

Exploitability

—

Impact

—

Vector string

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

37.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-121

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.