# CVE-2026-76266: Local Privilege Escalation through Linux Package Upgrades in Splunk Enterprise

> CVE-2026-76266: Local Privilege Escalation through Linux Package Upgrades in Splunk Enterprise. CVSS 7.7 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-76266
Last updated: 2026-10-14T12:22:06Z

- Published: 2026-10-07 20:46 UTC · Updated: 2026-10-14 12:22 UTC · Assigner: cisco
- CVSS: 7.7 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
- EPSS: 0.15%, 4th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-269

## Description

In Splunk Enterprise versions below 10.4.3, 10.2.7, 10.0.10, and 9.4.15 on Linux, a local user who can run commands as the user account running Splunk Enterprise could cause an affected Linux package upgrade to run attacker-controlled operating-system commands with root privileges. The vulnerability is possible because the Linux package maintainer script trusts existing Splunk Enterprise installation content when it performs upgrade operations with root privileges. The vulnerability requires an affected Linux package upgrade to occur after the local user modifies the installation. The local user should not be able to elevate privileges at will.

## Affected vendors and products

- Splunk: Splunk Enterprise

## Tracked companies

- [Splunk](https://rewindex.com/company/splunk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-76266)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-76266)
- [https://advisory.splunk.com/advisories/SVD-2026-1001](https://advisory.splunk.com/advisories/SVD-2026-1001)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-76266 · Markdown: https://rewindex.com/cve/CVE-2026-76266.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-76266 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:28.779Z