SmarterTools — known exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalog (KEV) lists vulnerabilities that CISA has confirmed are being exploited in the wild; U.S. federal civilian agencies are required to remediate each entry by its due date. This page joins the KEV entries for SmarterTools with NVD CVSS scores and CISA's ransomware-campaign flag. See our methodology or browse all CVEs.
Key findings
CISA's Known Exploited Vulnerabilities catalog lists 3 SmarterTools vulnerabilities confirmed as exploited in the wild across 1 product; 3 of them (100%) are flagged as used in known ransomware campaigns. All entries affect a single product: SmarterMail. CISA added 3 entries in 2026 so far, compared with 0 in 2025. Across the 3 entries with an NVD CVSS score (100% of the total), the average score is 9.9; 3 entries are rated critical by NVD. The most recent addition is CVE-2026-24423 (SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability), added on 2026-02-05.
Affected products
| Product | Entries | Share |
|---|---|---|
| SmarterMail | 3 | 100% |
Entries added per year
By date added to the KEV catalog
Exploited SmarterTools vulnerabilities (3)
Newest first. CVSS scores from NVD where available.
| CVE | Product | Vulnerability | Date added | Ransomware | CVSS |
|---|---|---|---|---|---|
| CVE-2026-24423 | SmarterMail | SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability | 2026-02-05 | Known | CRITICAL9.8 |
| CVE-2025-52691 | SmarterMail | SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerability | 2026-01-26 | Known | CRITICAL10.0 |
| CVE-2026-23760 | SmarterMail | SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability | 2026-01-26 | Known | CRITICAL9.8 |
Source: CISA Known Exploited Vulnerabilities catalog, joined with NIST NVD CVSS data. Vendor names are normalized across spellings. Compare all vendors.