CVE-2025-22166

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-22166
StatePUBLISHED
Assigneratlassian
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-10-21 16:15:37 UTC
Updated2026-09-30 23:10:00 UTC
DescriptionThis 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.

Risk And Classification

Primary CVSS: v4.0 8.3 HIGH from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-405 | DoS (Denial of Service) | CWE-405 CWE-405 Asymmetric Resource Consumption (Amplification)

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary8.3HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/C...
4.0CNADECLARED8.3HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Atlassian Confluence Data Center All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Atlassian Confluence Data Center affected 9.5.1 to 9.5.4 Not specified
CNA Atlassian Confluence Data Center affected 9.4.0 to 9.4.1 Not specified
CNA Atlassian Confluence Data Center affected 9.3.1 to 9.3.2 Not specified
CNA Atlassian Confluence Data Center affected 9.2.0 to 9.2.6 Not specified
CNA Atlassian Confluence Data Center affected 9.1.0 to 9.1.1 Not specified
CNA Atlassian Confluence Data Center affected 9.0.1 to 9.0.3 Not specified
CNA Atlassian Confluence Data Center affected 8.9.0 to 8.9.8 Not specified
CNA Atlassian Confluence Data Center affected 8.8.0 to 8.8.1 Not specified
CNA Atlassian Confluence Data Center affected 8.7.1 to 8.7.2 Not specified
CNA Atlassian Confluence Data Center affected 8.6.1 to 8.6.2 Not specified
CNA Atlassian Confluence Data Center affected 8.5.3 to 8.5.24 Not specified
CNA Atlassian Confluence Data Center affected 7.19.16 to 7.19.30 Not specified
CNA Atlassian Confluence Data Center unaffected 10.0.2 to 10.0.3 Not specified
CNA Atlassian Confluence Data Center unaffected 9.2.7 to 9.2.9 Not specified
CNA Atlassian Confluence Data Center unaffected 8.5.25 to 8.5.27 Not specified

References

ReferenceSourceLinkTags
jira.atlassian.com/browse/CONFSERVER-100907 [email protected] jira.atlassian.com Vendor Advisory
confluence.atlassian.com/pages/viewpage.action [email protected] confluence.atlassian.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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