HOMEVULNERABILITIESCVE-2025-22166
HIGH

CVE-2025-22166

CWE-405Published: October 21, 2025· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-22166 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Atlassian2 product(s)
confluence data centerconfluence server
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (2)

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

Quick Facts

CVE IDCVE-2025-22166
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-405
CISA KEVNo
Affected1 vendor(s)
PublishedOct 21, 2025

Related CVEs (CWE-405)

CVE-2025-53633
9.8
CVE-2025-31987
7.5
CVE-2026-47774
7.5
CVE-2025-8677
7.5
CVE-2018-15492
7.5
CVE-2021-38447
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2025-22166 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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