SmarterTools SmarterMail contains an authentication bypass using an alternate path or channel vulnerability in the password reset API. The force-reset-password endpoint permits anonymous requests and fails to verify the existing password or a reset token when resetting system administrator accounts. This could allow an unauthenticated attacker to supply a target administrator username and a new password to reset the account, resulting in full administrative compromise of the SmarterMail instance.
SmarterTools ยท SmarterMail
Known ransomware use: Known
Follow the source advisory and validate exposure in your environment.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Recent reporting that mentions CVE-2026-23760.
Underground Telegram channels shared SmarterMail exploit PoCs and stolen admin credentials within days of disclosure. Flare explains how monitoring these communities reveals rapid weaponization of CVE-2026-24423 and CVE-2026-23760 tied to ransomware activity. [...]