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A vulnerability in SmarterTools SmarterMail allows unauthenticated access to critical functions, according to claims. Known-exploited catalogue reports exploitation in the wild.
CVE-2026-23760 has an estimated attack likelihood score of 0.965 (~96.5% estimated chance of exploitation in the next 30 days; 99.9th percentile) as of 2026-09-24.
SmarterTools SmarterMail contains an unrestricted upload of file with dangerous type vulnerability that could allow an unauthenticated attacker to upload arbitrary files to any location on the mail…
Next step: Confirm whether SmarterTools SmarterMail is in your estate.
Who's reporting
1 of 3 perspectives
Official authority: Official 1Vendor statement missing. no VendorResearcher coverage missing. no Researcher1 signal
Only official coverage so far. Treat as an early signal.
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