CVE Watch4 ago 2026

CVE-2026-24423

SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability

CVSS

9.8

Crítico

EPSS

87.7%

p100

KEV

SÍ

5 feb 2026

Exploit Today

0-100

Publicado: 23 ene 2026 · Última mod.: 4 ago 2026 · CWE-306

EPSS · 30d

87.7%EPSS · 30 días87.7%

2026-08-022026-08-30

Ficha del catálogo KEV

Producto

SmarterTools / SmarterMail

Vulnerabilidad

SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability

Añadido a KEV

5 feb 2026

Remediar antes de

26 feb 2026

Uso conocido en ransomware

Sí

Descripción resumida

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.

Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notas

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

Descripción técnica

SmarterTools SmarterMail versions prior to build 9511 contain an unauthenticated remote code execution vulnerability in the ConnectToHub API method. The attacker could point the SmarterMail to the malicious HTTP server, which serves the malicious OS command. This command will be executed by the vulnerable application.

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