CVE-2026-23760

Analyzed
Published: 22 Jan 2026, 14:35
Last modified:05 Mar 2026, 01:30

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (nvd)
EPSS Score
65.1% CRITICAL
65% probability +1.37%
KEV
Listed
CISA
1 listing
Ransomware
Known Use
Public exploits
2 found
Dark Web
Not detected

Timeline

22 Jan 2026, 14:35
Published
Vulnerability first disclosed
26 Jan 2026, 00:00
Added to CISA KEV
SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability
16 Feb 2026, 00:00
CISA Remediation Due
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
05 Mar 2026, 01:30
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v4.0•CRITICAL•Score: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • v4.0•CRITICAL•Score: 9.3CVSS: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:X/V:X/RE:X/U:X
  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 65.10%• Percentile: 98%

Techniques & Countermeasures

  • CWE-288•Authentication Bypass Using an Alternate Path or Channel

    The product requires authentication, but the product has an alternate path or channel that does not require authentication.

Affected Systems

  • Unknown•SmarterMail

    < 100.0.9511

References (6)