Home / Vulnerabilities / CVE-2022-37042
CRITICAL SEVERITY Ransomware Linked
CVE-2022-37042 Synacor · Zimbra Collaboration Suite (ZCS)

Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

CRITICAL
9.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Likelihood

EPSS Prediction

94.33 %
Predictive Probability
Percentile Rank
100.0 th

Documented as more likely to be exploited than 100.0% of known CVEs.

Detection Date

Aug 11, 2022

Remediation Due

Sep 01, 2022

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

https://blog.zimbra.com/2022/08/authentication-bypass-in-mailboximportservlet-vulnerability/

https://blog.zimbra.com/2022/08/authentication-bypass-in-mailboximportservlet-vulnerability/
NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2022-37042