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High · 7.0 CVE-2026-54000 EUVD-2026-42919

osquery: Heap buffer overflow in `getProcessCurrentDirectory()` via `processes` table (Windows)

Published Jul 10, 2026 · Updated Jul 14, 2026 · Assigned by GitHub_M

Description

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

VendorProductAffectedFixed
osquery osquery < 5.23.1 —

References