CVE-2026-54000

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

Published Jul 10, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Osquery
Osquery osquery
Vendors & Products Osquery
Osquery osquery
Type Values Removed Values Added
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.
Title osquery: Heap buffer overflow in `getProcessCurrentDirectory()` via `processes` table (Windows)
Weaknesses CWE-122
References
Metrics cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 14, 2026, 3:55 AM
Reserved
Jun 11, 2026, 4:34 PM
Status
Deferred
Published
Jul 10, 2026, 4:16 PM
Modified
Jul 14, 2026, 5:16 AM