by Kastro
Paper/Archive/CVE-2026-24423

CVE-2026-24423

SmarterTools SmarterMail — SmarterTools SmarterMail < Build 9511 Unauthenticated RCE via ConnectToHub API

KEV · due 26 Febransomware useEPSS 88%public exploitSSVC actCVSS 9.3
critical.is priorityof 100
98
CVSS 9.3 (CNA)9.3 / 10 × 3027.9In CISA KEV+3030.0EPSS percentile 99.8.998 × 2020.0Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
SmarterMail< 100.0.9511100.0.9511CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

patchsmartertools.com/smartermail/release-notes/currentwriteupcode-white.com/public-vulnerability-list/#systemadminsettingscontrollerconnecttohub-missing-authentication-in-smartermailwriteupvulncheck.com/advisories/smartertools-smartermail-unauthenticated-rce-via-connecttohub-apirefcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24423kevcisa.gov/known-exploited-vulnerabilities-catalog