Vulnerability Analysis
SmarterTools SmarterMail < Build 9511 Unauthenticated RCE via ConnectToHub API
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.
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
9.3
CRITICAL
Exploitability:-
Impact Score:-
Temporal Score:-
EPSS:87.69%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2026-02-05
Ransomware Use
Known
KEV Due Date
2026-02-26
VulnCheck In-the-Wild
No
Nuclei Template
YES
EPSS Score
87.693%
EPSS Percentile
99.7th pct
GHSA ID
GitHub Severity
CRITICAL
SSVC Exploitation
Active
SSVC Automatable
Yes
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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