- Critical 9.3
- Known exploited (CISA KEV)
- Used in ransomware (CISA)
CVE-2026-23760
SmarterTools SmarterMail versions prior to build 9511 contain an authentication bypass 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. An unauthenticated attacker can supply a target administrator username and a new password to reset the account, resulting in full administrative compromise of the SmarterMail instance. NOTE: SmarterMail system administrator privileges grant the ability to execute operating system commands via built-in ma…
Scores
The facts
- Published
- 22 January 2026
- Last changed
- 4 August 2026
- NVD status
- Analyzed
- Severity
- Critical, CVSS 9.3 out of 10 (version 4.0)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R… - Weakness
- Affects
- smartertools smartermail
- Known exploited
- Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 26 January 2026. CISA lists it as used in ransomware campaigns.
- EPSS
- 96.4% chance of exploitation activity in the next 30 days (percentile 100).
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