CVE-2026-24423

CISA KEV RANSOMWARE
ACT NOW Priority: 0.00 BB Relevance: 10/100
Published: N/A Modified: N/A First seen: 2026-10-29 Status: pending_score

Description

SmarterTools SmarterMail contains a missing authentication for critical function vulnerability in the ConnectToHub API method. This could allow the attacker to point the SmarterMail instance to a malicious HTTP server which serves the malicious OS command and could lead to command execution.

CISA Known Exploited Vulnerability

Vendor / Product SmarterTools — SmarterMail
Date Added 2026-02-05
Remediation Due 2026-02-26
Ransomware Use CONFIRMED
https://www.smartertools.com/smartermail/release-notes/current ; https://www.cve.org/CVERecord?id=CVE-2026-24423 ; https://nvd.nist.gov/vuln/detail/CVE-2026-24423

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
smartertools smartermail < 100.0.9511

Bug Bounty Relevance

10 / 100
✓ Known exploited (KEV)
✓ High exploitation probability

CVSS Score

Unscored

EPSS — Exploitation Probability

88.18%
Raw Score 0.881770
Percentile 99.8%
Date 2026-10-28

Intelligence Sources

kev ref →