CVE-2026-23760

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

In the wild

CISA lists this as exploited in real attacks. Treat as urgent.

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-01-15 18:42 UTC ReservedThe CVE id was reserved by its CNA
2. 2026-01-22 15:16 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-01-26 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
4. 2026-02-16 Remediation deadlineCISA's due date for federal agencies to fix it
5. 2026-08-04 05:16 UTC Last updatedMost recent change to the record

Details

Published

2026-01-22 15:16 UTC

Last modified

2026-08-04 05:16 UTC

Added to CISA KEV

2026-01-26

Exploit probability

96.4% · EPSS, next 30 days

Weakness

CWE-288

Record status

Analyzed

Affected

• Smartertools Smartermail < 100.0.9511

Attack profile CVSS 4.0 · 9.3

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High