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Canon MailSuite Security Flaw Allows Attackers to Execute Code Remotely

ID: a54792b9-ea18-5bd2-99a0-03b8f3e22d9b

STIX ID: report--a54792b9-ea18-5bd2-99a0-03b8f3e22d9b

Feed Name: GBHackers

Threat Score
70/100

Date Published: 2026-05-14

Date Updated: 2026-06-18

Author: Divya

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**Canonical disclosure:** Canon disclosed a critical stack-based buffer overflow in GUARDIANWALL MailSuite (affecting versions 1.4.00 through 2.4.26) in the `pop3wallpasswd` command that can allow remote code execution; patches have been issued and disabling the MailSuite administration interface is offered as a temporary mitigation (JVN#35567473).

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