High [CVE-2026-76266] Local Privilege Escalation through Linux Package Upgrades in Splunk Enterprise
This high-severity Splunk advisory covers CVE-2026-76266 affecting Splunk Enterprise.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Android app · Google Play
Monitor future Splunk CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
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.
- Splunk Enterprise 10.4 before 10.4.3
- Splunk Enterprise 10.2 before 10.2.7
- Splunk Enterprise 10.0 before 10.0.10
- Splunk Enterprise 9.4 before 9.4.15
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
- 10.4.3
- 10.2.7
- 10.0.10
- 9.4.15
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
- 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.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.