SmarterTools SmarterMail known exploited vulnerabilities
We track 3 CVEs in SmarterTools SmarterMail. All of them are on CISA's Known Exploited Vulnerabilities catalog, meaning CISA has evidence of exploitation in the wild (listed 2026–2026). CISA flags 3 of them as used in ransomware campaigns. The most recent is CVE-2026-24423, added to KEV on .
- CVEs tracked
- 3
- On CISA KEV
- 3
- Ransomware use
- 3
- Rated critical
- 3
Every SmarterTools SmarterMail CVE we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV | Patch by |
|---|---|---|---|---|---|
| CVE-2026-24423 SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerabilityransomware use | [ CRITICAL ] | 9.8 | 88.2% | ||
| CVE-2026-23760 SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerabilityransomware use | [ CRITICAL ] | 9.8 | 96.4% | ||
| CVE-2025-52691 SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerabilityransomware use | [ CRITICAL ] | 10.0 | 85.7% |
Sorted by date added to KEV. Severity and CVSS as stated by NVD or the vendor; EPSS from FIRST.org. "Patch by" is CISA's BOD 22-01 deadline for US federal agencies, a useful priority signal for everyone else. Machine-readable: /api/v1/vendors/smartertools.json.
Every row links to its CVE record with the CISA required action, catalog coverage and primary sources. We describe impact and remediation only; no exploit code. See the full KEV tracker or compare KEV catalogs.