CVE-2026-76266 json
Local Privilege Escalation through Linux Package Upgrades in Splunk Enterprise
published 2026-10-07 32 d ago modified 2026-10-14 25 d ago also EUVD-2026-94618
- cvss
- 7.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 4%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Splunk Splunk Enterprise 9.4.15, 10.0.10, 10.2.7, 10.4.3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 32 d ago
Exploit prediction
0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H |
Affected products
- Splunk Splunk Enterprise
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
advisory.splunk.com
/advisories/SVD-2026-1001
vendor-advisory, mitigation
Sources
- CVE List CVE-2026-76266
- NVD CVE-2026-76266
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