CVE-2025-22166 — HIGH (7.5)

Q: How severe is CVE-2025-22166?

CVE-2025-22166 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2025-22166?

Check the references section above for vendor advisories and patch information. Affected products include: Atlassian Confluence Data Center, Atlassian Confluence Server.

Vulnerability Description

This High severity DoS (Denial of Service) vulnerability was introduced in version 2.0 of Confluence Data Center. This DoS (Denial of Service) vulnerability, with a CVSS Score of 8.3, 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. Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Confluence Data Center and Server 8.5: Upgrade to a release greater than or equal to 8.5.25 Confluence Data Center and Server 9.2: Upgrade to a release greater than or equal to 9.2.7 Confluence Data Center and Server 10.0: Upgrade to a release greater than or equal to 10.0.2 See the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]). This vulnerability was reported via our Atlassian (Internal) program.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Atlassian	Confluence Data Center	>= 8.5.0, < 8.5.25
Atlassian	Confluence Server	>= 8.5.0, < 8.5.25

Related Weaknesses (CWE)

CWE-405

References

https://confluence.atlassian.com/pages/viewpage.action?pageId=1652920034Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-100907Vendor Advisory

FAQ

What is CVE-2025-22166?

CVE-2025-22166 is a vulnerability with a CVSS score of 7.5 (HIGH). This High severity DoS (Denial of Service) vulnerability was introduced in version 2.0 of Confluence Data Center. This DoS (Denial of Service) vulnerability, with a CVSS Score of 8.3, allows an att...

How severe is CVE-2025-22166?

CVE-2025-22166 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-22166?

Check the references section above for vendor advisories and patch information. Affected products include: Atlassian Confluence Data Center, Atlassian Confluence Server.