CVE-2026-76259 (GCVE-0-2026-76259)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:34 – Updated: 2026-08-27 16:24
VLAI
Title
Improper Privilege Management on the Management Port in Splunk Enterprise for Windows
Summary
In Splunk Enterprise for Windows versions below 10.4.2, 10.2.6, 10.0.9, 9.4.13, and 9.3.14, a local user with access to the Windows host could bind to the management port before Splunk Enterprise starts, intercept authentication tokens from child processes, and use those tokens to compromise all relevant data and system integrity available to the user account running Splunk Enterprise. The vulnerability is possible because the Windows management-port listener does not apply exclusive address binding protections before the service starts.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 03:57 UTC
CWE
  • CWE-269 - The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 443 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Splunk Splunk Enterprise Affected: 10.4 , < 10.4.2 (custom)
Affected: 10.2 , < 10.2.6 (custom)
Affected: 10.0 , < 10.0.9 (custom)
Affected: 9.4 , < 9.4.13 (custom)
Affected: 9.3 , < 9.3.14 (custom)
guessed Create a notification for this product.
Date Public
2026-08-19 00:00
Credits
Aobo Wang (@M4x_1997) Gabriel Nitu, Splunk
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-76259",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-21T03:57:04.458467Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-27T16:24:55.649Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.4.2",
              "status": "affected",
              "version": "10.4",
              "versionType": "custom"
            },
            {
              "lessThan": "10.2.6",
              "status": "affected",
              "version": "10.2",
              "versionType": "custom"
            },
            {
              "lessThan": "10.0.9",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.4.13",
              "status": "affected",
              "version": "9.4",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.14",
              "status": "affected",
              "version": "9.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Aobo Wang (@M4x_1997)"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "Gabriel Nitu, Splunk"
        }
      ],
      "datePublic": "2026-08-19T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/markdown",
              "value": "In Splunk Enterprise for Windows versions below 10.4.2, 10.2.6, 10.0.9, 9.4.13, and 9.3.14, a local user with access to the Windows host could bind to the management port before Splunk Enterprise starts, intercept authentication tokens from child processes, and use those tokens to compromise all relevant data and system integrity available to the user account running Splunk Enterprise. The vulnerability is possible because the Windows management-port listener does not apply exclusive address binding protections before the service starts."
            }
          ],
          "value": "In Splunk Enterprise for Windows versions below 10.4.2, 10.2.6, 10.0.9, 9.4.13, and 9.3.14, a local user with access to the Windows host could bind to the management port before Splunk Enterprise starts, intercept authentication tokens from child processes, and use those tokens to compromise all relevant data and system integrity available to the user account running Splunk Enterprise. The vulnerability is possible because the Windows management-port listener does not apply exclusive address binding protections before the service starts."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T21:34:17.199Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "url": "https://advisory.splunk.com/advisories/SVD-2026-0801"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, and 9.4.14, or higher."
        }
      ],
      "source": {
        "advisory": "SVD-2026-0801"
      },
      "title": "Improper Privilege Management on the Management Port in Splunk Enterprise for Windows"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-76259",
    "datePublished": "2026-08-19T21:34:17.199Z",
    "dateReserved": "2026-08-19T12:02:03.619Z",
    "dateUpdated": "2026-08-27T16:24:55.649Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-76259",
      "date": "2026-11-01",
      "epss": "0.00167",
      "percentile": "0.0595"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "Splunk Enterprise",
                "vendor": "Splunk",
                "versions": [
                  {
                    "lessThan": "10.4.2",
                    "status": "affected",
                    "version": "10.4",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "10.2.6",
                    "status": "affected",
                    "version": "10.2",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "10.0.9",
                    "status": "affected",
                    "version": "10.0",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "9.4.13",
                    "status": "affected",
                    "version": "9.4",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "9.3.14",
                    "status": "affected",
                    "version": "9.3",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "psirt@cisco.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
                    "matchCriteriaId": "5F8DAAEB-0D7B-44A4-9373-CFAC28B6C7BD",
                    "versionEndExcluding": "9.3.14",
                    "versionStartIncluding": "9.3.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
                    "matchCriteriaId": "8BEBD0A0-2CFD-4DDE-BF01-E64A9D7FD14C",
                    "versionEndExcluding": "9.4.13",
                    "versionStartIncluding": "9.4.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
                    "matchCriteriaId": "0FD75354-A6EE-49F9-9B8A-31287A845CFB",
                    "versionEndExcluding": "10.0.9",
                    "versionStartIncluding": "10.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
                    "matchCriteriaId": "C8FDA841-04BC-404C-B56D-7869CBD8B56C",
                    "versionEndExcluding": "10.2.6",
                    "versionStartIncluding": "10.2.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
                    "matchCriteriaId": "209C1DE6-893D-424D-B103-B64A314AD8DC",
                    "versionEndExcluding": "10.4.2",
                    "versionStartIncluding": "10.4.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In Splunk Enterprise for Windows versions below 10.4.2, 10.2.6, 10.0.9, 9.4.13, and 9.3.14, a local user with access to the Windows host could bind to the management port before Splunk Enterprise starts, intercept authentication tokens from child processes, and use those tokens to compromise all relevant data and system integrity available to the user account running Splunk Enterprise. The vulnerability is possible because the Windows management-port listener does not apply exclusive address binding protections before the service starts."
          },
          {
            "lang": "es",
            "value": "En Splunk Enterprise para Windows versiones anteriores a 10.4.2, 10.2.6, 10.0.9, 9.4.13 y 9.3.14, un usuario local con acceso al host de Windows podr\u00eda vincularse al puerto de gesti\u00f3n antes de que Splunk Enterprise se inicie, interceptar tokens de autenticaci\u00f3n de procesos secundarios y usar esos tokens para comprometer todos los datos relevantes y la integridad del sistema disponibles para la cuenta de usuario que ejecuta Splunk Enterprise. La vulnerabilidad es posible porque el oyente del puerto de gesti\u00f3n de Windows no aplica protecciones de vinculaci\u00f3n de direcci\u00f3n exclusiva antes de que el servicio se inicie."
          }
        ],
        "id": "CVE-2026-76259",
        "lastModified": "2026-10-24T13:10:00.147",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.0,
              "impactScore": 6.0,
              "source": "psirt@cisco.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-76259",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-21T03:57:04.458467Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-19T22:17:13.927",
        "references": [
          {
            "source": "psirt@cisco.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://advisory.splunk.com/advisories/SVD-2026-0801"
          }
        ],
        "sourceIdentifier": "psirt@cisco.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-269"
              }
            ],
            "source": "psirt@cisco.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-76259",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-21T03:57:04.458467Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-27T16:16:43.127Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "Splunk Enterprise",
              "vendor": "Splunk",
              "versions": [
                {
                  "lessThan": "10.4.2",
                  "status": "affected",
                  "version": "10.4",
                  "versionType": "custom"
                },
                {
                  "lessThan": "10.2.6",
                  "status": "affected",
                  "version": "10.2",
                  "versionType": "custom"
                },
                {
                  "lessThan": "10.0.9",
                  "status": "affected",
                  "version": "10.0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "9.4.13",
                  "status": "affected",
                  "version": "9.4",
                  "versionType": "custom"
                },
                {
                  "lessThan": "9.3.14",
                  "status": "affected",
                  "version": "9.3",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "reporter",
              "value": "Aobo Wang (@M4x_1997)"
            },
            {
              "lang": "en",
              "type": "reporter",
              "value": "Gabriel Nitu, Splunk"
            }
          ],
          "datePublic": "2026-08-19T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/markdown",
                  "value": "In Splunk Enterprise for Windows versions below 10.4.2, 10.2.6, 10.0.9, 9.4.13, and 9.3.14, a local user with access to the Windows host could bind to the management port before Splunk Enterprise starts, intercept authentication tokens from child processes, and use those tokens to compromise all relevant data and system integrity available to the user account running Splunk Enterprise. The vulnerability is possible because the Windows management-port listener does not apply exclusive address binding protections before the service starts."
                }
              ],
              "value": "In Splunk Enterprise for Windows versions below 10.4.2, 10.2.6, 10.0.9, 9.4.13, and 9.3.14, a local user with access to the Windows host could bind to the management port before Splunk Enterprise starts, intercept authentication tokens from child processes, and use those tokens to compromise all relevant data and system integrity available to the user account running Splunk Enterprise. The vulnerability is possible because the Windows management-port listener does not apply exclusive address binding protections before the service starts."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-269",
                  "description": "The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.",
                  "lang": "en",
                  "type": "cwe"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-19T21:34:17.199Z",
            "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
            "shortName": "cisco"
          },
          "references": [
            {
              "url": "https://advisory.splunk.com/advisories/SVD-2026-0801"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "value": "Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, and 9.4.14, or higher."
            }
          ],
          "source": {
            "advisory": "SVD-2026-0801"
          },
          "title": "Improper Privilege Management on the Management Port in Splunk Enterprise for Windows"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "assignerShortName": "cisco",
        "cveId": "CVE-2026-76259",
        "datePublished": "2026-08-19T21:34:17.199Z",
        "dateReserved": "2026-08-19T12:02:03.619Z",
        "dateUpdated": "2026-08-27T16:24:55.649Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    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.