CVE-2026-24423 — Actively Exploited: SmarterMail (SmarterTools)
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.
| CVE ID | CVE-2026-24423 |
|---|---|
| Vendor | SmarterTools |
| Product | SmarterMail |
| Vulnerability name | SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability |
| Date added | 2026-02-05 |
| Remediation due | 2026-02-26 |
| Known ransomware use | Known |
| Required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
| Description | 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. |
| Source | CISA Known Exploited Vulnerabilities |
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