8.3
/ 10
HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
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.
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.
Basic Information
ID
CVE-2025-22166
Source
atlassian
Published
Oct 21, 2025 at 16:00
Modified
Oct 21, 2025 at 16:21
Affected Product
Vendor
Atlassian
Product
Confluence Data Center
Version
9.5.1 to 9.5.4
Affected Versions
Atlassian Confluence Data Center 9.5.1 to 9.5.4
Atlassian Confluence Data Center 9.4.0 to 9.4.1
Atlassian Confluence Data Center 9.3.1 to 9.3.2
Atlassian Confluence Data Center 9.2.0 to 9.2.6
Atlassian Confluence Data Center 9.1.0 to 9.1.1
Atlassian Confluence Data Center 9.0.1 to 9.0.3
Atlassian Confluence Data Center 8.9.0 to 8.9.8
Atlassian Confluence Data Center 8.8.0 to 8.8.1
Atlassian Confluence Data Center 8.7.1 to 8.7.2
Atlassian Confluence Data Center 8.6.1 to 8.6.2
Atlassian Confluence Data Center 8.5.3 to 8.5.24
Atlassian Confluence Data Center 7.19.16 to 7.19.30
Atlassian Confluence Data Center 9.4.0 to 9.4.1
Atlassian Confluence Data Center 9.3.1 to 9.3.2
Atlassian Confluence Data Center 9.2.0 to 9.2.6
Atlassian Confluence Data Center 9.1.0 to 9.1.1
Atlassian Confluence Data Center 9.0.1 to 9.0.3
Atlassian Confluence Data Center 8.9.0 to 8.9.8
Atlassian Confluence Data Center 8.8.0 to 8.8.1
Atlassian Confluence Data Center 8.7.1 to 8.7.2
Atlassian Confluence Data Center 8.6.1 to 8.6.2
Atlassian Confluence Data Center 8.5.3 to 8.5.24
Atlassian Confluence Data Center 7.19.16 to 7.19.30