# CVE-2025-22166

> CVE-2025-22166. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-22166
Last updated: 2026-10-08T11:10:00Z

- Published: 2025-10-21 16:00 UTC · Updated: 2026-10-08 11:10 UTC · Assigner: atlassian
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.50%, 43th percentile (scored 2026-10-25)
- CISA KEV: no

## 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.

## Affected vendors and products

- Atlassian: Confluence Data Center

## Tracked companies

- [Confluence](https://rewindex.com/company/confluence.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-22166)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-22166)
- [https://confluence.atlassian.com/pages/viewpage.action?pageId=1652920034](https://confluence.atlassian.com/pages/viewpage.action?pageId=1652920034)
- [https://jira.atlassian.com/browse/CONFSERVER-100907](https://jira.atlassian.com/browse/CONFSERVER-100907)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-22166 · Markdown: https://rewindex.com/cve/CVE-2025-22166.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-22166 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:15.051Z