# CVE-2026-76281: Improper Access Control in Splunk Enterprise

Status: published. Published: 2026-10-07. Updated: 2026-11-07.

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76281 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.

## Remediation

- fix: Upgrade Splunk Enterprise to versions 10.4.3, 10.2.7, 10.0.10, and 9.4.15, or higher. (source: CNA: cisco)

## Affected products and versions

- Splunk / Splunk Enterprise: ≥ 10.4; < 10.4.3 (affected, custom); ≥ 10.2; < 10.2.7 (affected, custom); ≥ 10.0; < 10.0.10 (affected, custom); ≥ 9.4; < 9.4.15 (affected, custom). Source: CNA: cisco

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
            "versionEndExcluding": "9.4.15",
            "versionStartIncluding": "9.4.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
            "versionEndExcluding": "10.0.10",
            "versionStartIncluding": "10.0.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
            "versionEndExcluding": "10.2.7",
            "versionStartIncluding": "10.2.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*",
            "versionEndExcluding": "10.4.3",
            "versionStartIncluding": "10.4.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-07; percentile 7.07%

- SSVC: exploitation none; automatable yes; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-284

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://advisory.splunk.com/advisories/SVD-2026-1002 (CNA: cisco)

- https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification (ADP: CVE)

- https://advisory.splunk.com/advisories/SVD-2026-1002 (psirt@cisco.com; Vendor Advisory)

- https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification (af854a3a-2127-422b-91ae-364da2661108)

## Provenance

- CNA: cisco: https://www.cve.org/CVERecord?id=CVE-2026-76281; retrieved 2026-11-07; source updated 2026-11-07

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76281; retrieved 2026-11-07; source updated 2026-11-07

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-76281; retrieved 2026-11-07; source updated Not reported

Revision: 9a800e6fcce893daf2323c39097dc87c2da582611444a9cce1980566488dbdd2

Canonical: https://y2.dev/cve/CVE-2026-76281

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

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