Vendor
SmarterTools: actively exploited vulnerabilities
3 vulnerabilities in SmarterTools products are listed in CISA’s catalog of actively exploited vulnerabilities, 3 of them used by ransomware. Latest addition on February 5, 2026: CVE-2026-24423 (SmarterMail).
- 3 exploited vulnerabilities in the catalog
- 3 added in the last 12 months
- 3 used by ransomware
- 1 product affected
Affected products
- SmarterMail3
All exploited vulnerabilities
CISA KEV catalog, newest first: each entry corresponds to observed exploitation.
2026 3 vulnerabilities
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CVE-2026-24423Used by ransomwareSmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability
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CVE-2026-23760Used by ransomwareSmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability
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CVE-2025-52691Used by ransomwareSmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerability
What to do
If your estate includes any of these products, make sure the vendor’s patches are applied, starting with the most recent vulnerabilities and those used by ransomware, then look for signs of compromise: an exploited vulnerability has often been used before it was fixed.
Additions from all vendors are tracked on the Actively exploited vulnerabilities page, updated several times a day. Sources: CISA KEV catalog (US public domain) and CERT-FR.