Critical SmarterMail vulnerability under attack, no CVE yet

Securityaffairs.Co •Pierluigi Paganini • January 22, 2026

A SmarterMail flaw (WT-2026-0001) is under active attack just days after its January 15 patch, with no CVE assigned yet. A newly disclosed flaw in SmarterTools SmarterMail is being actively exploited just two days after a patch was released. The issue, tracked as WT-2026-0001 and lacking a CVE, was fixed on January 15, 2026, with […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Active Exploitation of SmarterMail Vulnerability WT-2026-0001 Post-Patch A vulnerability in SmarterTools SmarterMail, tracked as WT-2026-0001, is being actively exploited just two days after a patch was released on January 15, 2026. As of now, no CVE has been assigned to this flaw, raising concerns among users of the software. 6 sources 66

Extracted Entities

Critical SmarterMail vulnerability under attack, no CVE yet

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Extracted Entities

Attack Types (1)

Companies (1)

Platforms (1)

Vulnerabilities (1)