CVE-2025-22166 (GCVE-0-2025-22166)

Vulnerability from cvelistv5 – Published: 2025-10-21 16:00 – Updated: 2025-10-21 16:21
VLAI
Summary
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-21 16:21 UTC
CWE
  • DoS (Denial of Service)
  • CWE-405 - Asymmetric Resource Consumption (Amplification)
Impacted products
Vendor Product Version CPE status
Atlassian Confluence Data Center Affected: 9.5.1 to 9.5.4
Affected: 9.4.0 to 9.4.1
Affected: 9.3.1 to 9.3.2
Affected: 9.2.0 to 9.2.6
Affected: 9.1.0 to 9.1.1
Affected: 9.0.1 to 9.0.3
Affected: 8.9.0 to 8.9.8
Affected: 8.8.0 to 8.8.1
Affected: 8.7.1 to 8.7.2
Affected: 8.6.1 to 8.6.2
Affected: 8.5.3 to 8.5.24
Affected: 7.19.16 to 7.19.30
Unaffected: 10.0.2 to 10.0.3
Unaffected: 9.2.7 to 9.2.9
Unaffected: 8.5.25 to 8.5.27
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:9.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:9.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:9.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:9.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:9.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:9.2.6:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:8.5.13:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:8.5.22:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:8.5.23:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:8.5.24:*:*:*:*:*:*:*
    cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
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                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "LOW",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "HIGH",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "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",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "security@atlassian.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-22166",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-21T16:21:21.142041Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-10-21T16:15:37.370",
        "references": [
          {
            "source": "security@atlassian.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1652920034"
          },
          {
            "source": "security@atlassian.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://jira.atlassian.com/browse/CONFSERVER-100907"
          }
        ],
        "sourceIdentifier": "security@atlassian.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-405"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-10-22T16:18:25+00:00",
      "cve": "CVE-2025-22166",
      "id": "CVE-2025-22166",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2025-22166",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-22166.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-22166",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-21T16:21:21.142041Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
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              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-405",
                    "description": "CWE-405 Asymmetric Resource Consumption (Amplification)",
                    "lang": "en",
                    "type": "CWE"
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            "providerMetadata": {
              "dateUpdated": "2025-10-21T16:20:52.235Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        ],
        "cna": {
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              "product": "Confluence Data Center",
              "vendor": "Atlassian",
              "versions": [
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                  "version": "9.5.1 to 9.5.4"
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                {
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                {
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                },
                {
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                  "version": "9.2.0 to 9.2.6"
                },
                {
                  "status": "affected",
                  "version": "9.1.0 to 9.1.1"
                },
                {
                  "status": "affected",
                  "version": "9.0.1 to 9.0.3"
                },
                {
                  "status": "affected",
                  "version": "8.9.0 to 8.9.8"
                },
                {
                  "status": "affected",
                  "version": "8.8.0 to 8.8.1"
                },
                {
                  "status": "affected",
                  "version": "8.7.1 to 8.7.2"
                },
                {
                  "status": "affected",
                  "version": "8.6.1 to 8.6.2"
                },
                {
                  "status": "affected",
                  "version": "8.5.3 to 8.5.24"
                },
                {
                  "status": "affected",
                  "version": "7.19.16 to 7.19.30"
                },
                {
                  "status": "unaffected",
                  "version": "10.0.2 to 10.0.3"
                },
                {
                  "status": "unaffected",
                  "version": "9.2.7 to 9.2.9"
                },
                {
                  "status": "unaffected",
                  "version": "8.5.25 to 8.5.27"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
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                      "criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*",
                      "versionEndIncluding": "9.4.1",
                      "versionStartIncluding": "9.4.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:a:atlassian:confluence_data_center:9.4.1:*:*:*:*:*:*:*",
                      "vulnerable": true
                    },
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                      "criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*",
                      "versionEndIncluding": "9.3.2",
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                    },
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                      "criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*",
                      "versionEndIncluding": "7.19.30",
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                    },
                    {
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                    },
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            {
              "lang": "en",
              "value": "This High severity DoS (Denial of Service) vulnerability was introduced in version 2.0 of Confluence Data Center.\r\n\r\nThis 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.\r\n\r\nAtlassian 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:\r\n Confluence Data Center and Server 8.5: Upgrade to a release greater than or equal to 8.5.25\r\n Confluence Data Center and Server 9.2: Upgrade to a release greater than or equal to 9.2.7\r\n Confluence Data Center and Server 10.0: Upgrade to a release greater than or equal to 10.0.2\r\n\r\nSee 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]).\r\n\r\nThis vulnerability was reported via our Atlassian (Internal) program."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "baseScore": 8.3,
                "baseSeverity": "HIGH",
                "vectorString": "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",
                "version": "4.0"
              }
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                  "description": "DoS (Denial of Service)",
                  "lang": "en",
                  "type": "DoS (Denial of Service)"
                }
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          "providerMetadata": {
            "dateUpdated": "2025-10-21T16:00:05.978Z",
            "orgId": "f08a6ab8-ed46-4c22-8884-d911ccfe3c66",
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            },
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        "assignerShortName": "atlassian",
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        "datePublished": "2025-10-21T16:00:05.978Z",
        "dateReserved": "2025-01-01T00:01:27.176Z",
        "dateUpdated": "2025-10-21T16:21:27.828Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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