Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-22166

Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
21/10/2025
Last modified:
05/12/2025

Description

This High severity DoS (Denial of Service) vulnerability was introduced in version 2.0 of Confluence Data Center.<br /> <br /> 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.<br /> <br /> 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:<br /> Confluence Data Center and Server 8.5: Upgrade to a release greater than or equal to 8.5.25<br /> Confluence Data Center and Server 9.2: Upgrade to a release greater than or equal to 9.2.7<br /> Confluence Data Center and Server 10.0: Upgrade to a release greater than or equal to 10.0.2<br /> <br /> 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]).<br /> <br /> This vulnerability was reported via our Atlassian (Internal) program.

Impact

Vector 4.0
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 CVSS v4.0 Severity and Metrics:

Base Score: 8.30 HIGH
Vector: 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

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): High

Base Score 4.0
8.30
Severity 4.0
HIGH
Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* 8.5.0 (including) 8.5.25 (excluding)
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* 9.2.0 (including) 9.2.7 (excluding)
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* 10.0.0 (including) 10.0.2 (excluding)
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* 8.5.0 (including) 8.5.25 (excluding)
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* 9.2.0 (including) 9.2.7 (excluding)
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* 10.0.0 (including) 10.0.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools