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9.3
CVE-2026-32661: GUARDIANWALL MailSuite and Mail Security Cloud SaaS - Remote Code Execution Risk
CVE-2026-32661
Summary
The GUARDIANWALL MailSuite and Mail Security Cloud SaaS may allow a remote attacker to execute malicious code on the system if they send a specially crafted request to the product's web service. This could potentially allow the attacker to take control of the system. To mitigate this risk, ensure that the product is not configured to run pop3wallpasswd with grdnwww user privilege when receiving requests from the web service.
Original title
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...
Original 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.
nvd CVSS3.0
9.8
nvd CVSS4.0
9.3
Vulnerability type
CWE-121
Stack-based Buffer Overflow
Published: 13 May 2026 · Updated: 28 May 2026 · First seen: 13 May 2026