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SmarterTools exploited vulnerabilities: 3 in CISA KEV, 3 in the last 12 months

Gociux · updated with each KEV addition · latest 5 Feb 2026

CISA lists 3 SmarterTools vulnerabilities as exploited in the wild, 3 of them added in the last 12 months (up from 0 in the 12 months before). 3 (100%) are known to be used in ransomware campaigns. For entries added in the last two years, the median time from CVE publication to the KEV listing was 13 days. Most affected: SmarterMail (3).

3in CISA KEV
3last 12 months
100%ransomware-linked
13dpublication → KEV (median)

Exploited CVEs added per year

000003
202120222023202420252026

Most affected products

ProductKEV entries
SmarterMail3

Every exploited SmarterTools CVE

CVEVulnerabilityAdded
CVE-2026-24423SmarterTools SmarterMail Missing Authentication for Critical Function VulnerabilityRANSOMWARESmarterMail5 Feb 2026
CVE-2026-23760SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel VulnerabilityRANSOMWARESmarterMail26 Jan 2026
CVE-2025-52691SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type VulnerabilityRANSOMWARESmarterMail26 Jan 2026

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How to read this: CISA KEV lists vulnerabilities with reliable evidence of exploitation; a vendor with many entries is often one with a large, internet-facing install base, not necessarily worse engineering. "Publication → KEV" is the median number of days between the CVE's publication and its addition to KEV, for entries added in the last 24 months (3 entries); it is an upper bound on how long defenders had, since exploitation usually starts before the listing. Under NIS2 article 21(2)(d), supplier security is part of your risk management; this page is a starting point for that review. Compare vendors on the scorecard index.

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