CVE-2026-24423
SmarterTools SmarterMail versions prior to build 9511 contain an unauthenticated remote code execution vulnerability in the ConnectToHub API method. The attacker could point the SmarterMail to the malicious HTTP server, which serves the malicious OS command. This command will be executed by the vulnerable application.
- Published Jan 23, 2026
- CVSS 9.3 critical
- 88.2% chance of exploitation in the next 30 days (EPSS)
- In CISA's Known Exploited Vulnerabilities catalog
Affected software
In the news
- Quantifying 2026 Routinely Targeted Vulnerabilities (So Far) VulnCheck Blog ·
- CVE-2026-20079 - Cisco FMC Authentication Bypass RCE Analysis VulnCheck Blog ·
- Herding Cats: Recent Cisco SD-WAN Manager Vulnerabilities VulnCheck Blog ·
- Street Smarts: SmarterMail ConnectToHub Unauthenticated RCE (CVE-2026-24423) VulnCheck Blog ·