CVE Watch4 ago 2026

CVE-2022-37042

Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability

CVSS

9.8

Crítico

EPSS

91.9%

p100

KEV

SÍ

11 ago 2022

Exploit Today

0-100

Publicado: 12 ago 2022 · Última mod.: 4 ago 2026 · CWE-22

EPSS · 30d

88.8%EPSS · 30 días91.9%

2026-08-022026-08-30

Ficha del catálogo KEV

Producto

Synacor / Zimbra Collaboration Suite (ZCS)

Vulnerabilidad

Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability

Añadido a KEV

11 ago 2022

Remediar antes de

1 sept 2022

Uso conocido en ransomware

Sí

Descripción resumida

Synacor Zimbra Collaboration Suite (ZCS) contains an authentication bypass vulnerability in MailboxImportServlet. This vulnerability was chained with CVE-2022-27925 which allows for unauthenticated remote code execution.

Acción requerida

Apply updates per vendor instructions.

Notas

https://blog.zimbra.com/2022/08/authentication-bypass-in-mailboximportservlet-vulnerability/; https://nvd.nist.gov/vuln/detail/CVE-2022-37042

Descripción técnica

Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it. By bypassing authentication (i.e., not having an authtoken), an attacker can upload arbitrary files to the system, leading to directory traversal and remote code execution. NOTE: this issue exists because of an incomplete fix for CVE-2022-27925.

Referencias oficiales

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