S/MIME Encryption Exposure in Znuny CommunicationLog
CVE-2025-26842

7.5HIGH

Key Information:

Vendor

Znuny

Status
Znuny
Vendor
CVE Published:
8 May 2025

What is CVE-2025-26842?

A vulnerability in Znuny allows users with access to the CommunicationLog to view the content of S/MIME encrypted email messages, even when they should not have access to the associated ticket. This exposure compromises email security, potentially revealing sensitive information to unauthorized users.

References

https://www.znuny.org/en/advisories/zsa-2025-01

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.