CVE-2026-78604

Incorrect Permission Assignment for Critical Resource (CWE-732) in Elastic Agent can lead to local privilege escalation via Replace Binaries (CAPEC-642). On Windows systems where Elastic Agent is installed in unprivileged mode, resources used by the agent service are created with access controls broader than required. A local user could take advantage of this to cause the service to execute code of their choosing, ultimately obtaining SYSTEM-level privileges on the host.

  • Published Sep 2, 2026
  • CVSS 7.8 high
  • 0.1% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-78604 at the National Vulnerability Database