{"id":"CVE-2026-54000","summary":"osquery: Heap buffer overflow in `getProcessCurrentDirectory()` via `processes` table (Windows)","details":"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.","aliases":["GHSA-4r78-6hg6-33gg"],"modified":"2026-07-16T03:48:42.574549879Z","published":"2026-07-10T14:51:35.142Z","database_specific":{"cwe_ids":["CWE-122"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54000.json","unresolved_ranges":[{"extracted_events":[{"fixed":"5.23.1"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/osquery/osquery/releases/tag/5.23.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54000.json"},{"type":"ADVISORY","url":"https://github.com/osquery/osquery/security/advisories/GHSA-4r78-6hg6-33gg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54000"},{"type":"FIX","url":"https://github.com/osquery/osquery/commit/3d457c412eb0c986b0c37d8903edae8bc9f9e246"},{"type":"FIX","url":"https://github.com/osquery/osquery/pull/8934"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/osquery/osquery","events":[{"introduced":"0"},{"fixed":"3d457c412eb0c986b0c37d8903edae8bc9f9e246"}],"database_specific":{"source":"REFERENCES"}}],"versions":["5.23.0","5.22.1","5.22.0","5.21.0","5.20.0","5.19.0","5.18.0","5.17.0","5.16.0","5.15.0","5.14.1","5.14.0","5.13.1","5.13.0","5.12.1","5.12.0","5.11.0","5.10.2","5.10.1","5.10.0","5.9.1","5.9.0","5.8.2","5.8.1","5.8.0","5.7.0","5.6.0","5.5.1","5.5.0","5.4.0","5.3.0","5.2.2","5.2.1","5.2.0","5.1.0","5.0.1","5.0.0","4.9.0","4.8.0","0.0.2","4.7.0","4.6.0","4.5.1","4.5.0","4.4.0","4.3.0","4.2.0","4.1.2","4.1.1","4.1.0","4.0.2","4.0.1","4.0.0","3.3.2","3.3.1","3.3.0","3.2.9","3.2.8","3.2.7","3.2.6","3.2.5","3.2.4","3.2.3","3.2.2","3.2.1","3.2.0","3.1.0","3.0.0","2.11.2","2.11.1","2.11.0","2.10.4","2.10.3","2.10.2","2.10.1","2.10.0","2.9.2","2.9.1","2.9.0","2.8.1","2.8.0","2.7.0","2.6.1","2.6.0","2.5.3","2.5.2","2.5.1","2.5.0","2.4.7","2.4.6","2.4.5","2.4.4","2.4.3","2.4.2","2.4.1","2.4.0","2.3.4","2.3.3","2.3.2","2.3.1","2.3.0","2.2.3","2.2.2","2.2.1","2.2.0","2.1.2","2.1.1","2.1.0","2.0.0","1.8.2","1.8.1","1.8.0","1.7.7","1.7.6","1.7.5","1.7.4","1.7.3","1.7.2","1.7.1","1.7.0","1.6.4","1.6.3","1.6.2","1.6.1","1.6.0","1.5.3","1.5.2","1.5.1","1.5.0","1.4.7","1.4.6","1.4.5","1.4.4","1.4.3","1.4.2","1.4.1","1.4.0","1.3.1","1.3.0","1.2.2","1.2.1","1.2.0","1.1.0","1.0.5","1.0.4","1.0.3","1.0.2","v0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54000.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}