CVE-2026-24423 - SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability
SmarterTools SmarterMail contains a missing authentication for critical function vulnerability in the ConnectToHub API method. This could allow the attacker to point the SmarterMail instance to a malicious HTTP server which serves the malicious OS command and could lead to command execution.
- Severity
- critical
- Product
- SmarterTools SmarterMail
- Published
- 2026-02-05
- EPSS
- 0.882
- CISA KEV
- Known exploited
- Ransomware
- Known campaign use
References and validation
- https://github.com/search?q=CVE-2026-24423&type=repositories
- https://nvd.nist.gov/vuln/detail/CVE-2026-24423
Entries are refreshed from CISA KEV and FIRST EPSS. Validate applicability before testing.