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Tag: SmarterMail

Ransomware group breached SmarterTools via flaw in its SmarterMail deployment

SmarterTools, the company behind the popular Microsoft Exchange alternative SmarterMail, has been breached by a ransomware-wielding group that leveraged a recently fixed vulnerability in that solution. How did the SmarterTools breach happen? Derek Curtis, the firm’s Chief Operating Officer, said that the breach happened on January 29, 2026. “Prior to the breach, we had approximately…

Ransomware group breached SmarterTools via flaw in its SmarterMail deployment

SmarterTools, the company behind the popular Microsoft Exchange alternative SmarterMail, has been breached by a ransomware-wielding group that leveraged a recently fixed vulnerability in that solution. How did the SmarterTools breach happen? Derek Curtis, the firm’s Chief Operating Officer, said that the breach happened on January 29, 2026. “Prior to the breach, we had approximately…

Ransomware attackers are exploiting critical SmarterMail vulnerability (CVE-2026-24423)

For the third time in two weeks, CISA added a vulnerability (CVE-2026-24423) affecting SmarterTools’ SmarterMail email and collaboration server to its Known Exploited Vulnerabilities catalog, and this one is being exploited in ransomware attacks. A glut of SmarterMail vulnerabilities On January 26, the US cybersecurity agency listed CVE-2025-52691 (a unrestricted upload of file with dangerous…

U.S. CISA adds SmarterTools SmarterMail and React Native Community CLI flaws to its Known Exploited Vulnerabilities catalog

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds SmarterTools SmarterMail and React Native Community CLI flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added SmarterTools SmarterMail and React Native Community CLI flaws to its Known Exploited Vulnerabilities (KEV) catalog. Below are the flaws added to the catalog: CVE-2025-11953 React Native…