CVE-2026-54000: Osquery

High severity, CVSS 7.0. EPSS: 0.2% chance of exploitation in the next 30 days.

osquery is a SQL powered operating system instrumentation, monitoring, and analytics framework. Prior to 5.23.1, on Windows, a local unprivileged attacker can cause a heap buffer out-of-bounds write if there is a query of the processes table targeting a maliciously crafted process, due to unchecked PEB string lengths in process command-line and current-directory reads. If exploited successfully, this could allow a potential local privilege escalation from standard user to SYSTEM. This issue is fixed in version 5.23.1.

Affected products

• Osquery Osquery: before 5.23.1 (fixed in 5.23.1)

Published 2026-07-10. Last modified 2026-07-14.