Unrated severityNVD Advisory· Published Jul 10, 2026· Updated Jul 14, 2026
osquery: Heap buffer overflow in `getProcessCurrentDirectory()` via `processes` table (Windows)
CVE-2026-54000
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
1Patches
Vulnerability mechanics
References
4- github.com/osquery/osquery/commit/3d457c412eb0c986b0c37d8903edae8bc9f9e246mitrex_refsource_MISC
- github.com/osquery/osquery/pull/8934mitrex_refsource_MISC
- github.com/osquery/osquery/releases/tag/5.23.1mitrex_refsource_MISC
- github.com/osquery/osquery/security/advisories/GHSA-4r78-6hg6-33ggmitrex_refsource_CONFIRM
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