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CVE-2025-22166

Confluence Data Center - Confluence Server

Atlassian CVSS 7.5 Updated April 6, 2026

Executive Risk Summary

"A High severity DoS vulnerability in Confluence Data Center allows an attacker to cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a host connected to a network. The vulnerability can be exploited by an attacker to disrupt services, and Atlassian recommends upgrading to a fixed version to mitigate the risk."

Anticipated Attack Path

  1. 1. Exploitation of the DoS vulnerability
  2. 2. Disruption of services in Confluence Data Center
  3. 3. Unavailability of resources for intended users

Am I Vulnerable?

  • Verify the version of Confluence Data Center
  • Check for any signs of service disruption
  • Upgrade to a fixed version if necessary

Operational Audit Arsenal

Target Type Service
Target Asset confluence
Standard Path /opt/atlassian/confluence

Manual Verification Required

This is a non-Windows asset (Atlassian). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Likely

Service disruption possible during upgrade

Internal Work Notes

High severity DoS vulnerability in Confluence Data Center, recommend upgrading to fixed version to prevent service disruption

Technical Intelligence & Operational Utilities • Delivered Weekly

Intelligence Sources

Related Atlassian Threats

Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.