Vulnerability details
CVE-2026-24423
Actively exploited
SmarterTools SmarterMail
SmarterTools SmarterMail < Build 9511 Unauthenticated RCE via ConnectToHub API
CVSS 4.0
9.3Critical
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| SmarterTools | SmarterMail | v < 100.0.9511 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://www.smartertools.com/smartermail/release-notes/current release-notespatch
- https://code-white.com/public-vulnerability-list/#systemadminsettingscontrollerconnecttohub-missing-authentication-in-smartermail third-party-advisory
- https://www.vulncheck.com/advisories/smartertools-smartermail-unauthenticated-rce-via-connecttohub-api third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24423 government-resource
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Details
- Published
- 2026-01-23
- Last updated
- 2026-08-04
- State
- Published
- Assigner (CNA)
- VulnCheck
- Kolun priority
- 79 · High
CISA KEV catalog
- Date added
- 2026-02-05
- Due date
- 2026-02-26
- Used in ransomware
- Yes
Exploit prediction (EPSS)
88.17%
Probability of exploitation in 30 days
99.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-306Missing Authentication for Critical Function