CVE-2026-23760: SmarterTools SmarterMail < Build 9511 Authentication Bypass via Password Reset API
In CISA’s Known Exploited Vulnerabilities catalog: SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability.
Added , federal remediation due . Known ransomware use: Known.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description
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 management functionality, effectively providing administrative (SYSTEM or root) access on the underlying host.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · CWE-288
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
SmarterTools: SmarterMail
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- code-white.com/public-vulnerability-list/ (opens in new tab)
- labs.watchtowr.com/attackers-with-decompilers-strike-again-smartertools-smartermail-wt-2… (opens in new tab)
- www.smartertools.com/smartermail/release-notes/current (opens in new tab)
- www.vulncheck.com/advisories/smartertools-smartermail-authentication-bypass-via-passwor… (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)