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CVE-2026-54000— osquery: Heap buffer overflow in `getProcessCurrentDirectory()` via `processes` table (Windows)

Quick assessment

Affected
osquery osquery
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

osquery osquery是osquery社区的一个基于 SQL 的操作系统检测、监控和分析软件。 osquery 5.23.1之前版本存在缓冲区错误漏洞，该漏洞源于进程命令行和当前目录读取中的PEB字符串长度未检查，可能导致堆缓冲区越界写入，本地低权限攻击者通过查询针对特制进程的进程表，可能将权限从标准用户提升至SYSTEM。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 1

VendorProduct Version RangeStatus
osquery osquery < 5.23.1 affected
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I. Basic Information for CVE-2026-54000

Vulnerability Information
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Vulnerability Title
osquery: Heap buffer overflow in `getProcessCurrentDirectory()` via `processes` table (Windows)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
osquery 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
osquery osquery是osquery社区的一个基于 SQL 的操作系统检测、监控和分析软件。 osquery 5.23.1之前版本存在缓冲区错误漏洞，该漏洞源于进程命令行和当前目录读取中的PEB字符串长度未检查，可能导致堆缓冲区越界写入，本地低权限攻击者通过查询针对特制进程的进程表，可能将权限从标准用户提升至SYSTEM。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
osquery osquery < 5.23.1 -

II. Public POCs for CVE-2026-54000

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III. Intelligence Information for CVE-2026-54000

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Patches & Fixes for CVE-2026-54000 (2)

Vendor Advisories for CVE-2026-54000 (1)

Vendor Pages for CVE-2026-54000 (1)

Same Patch Batch · osquery · 2026-07-10 · 3 CVEs total

CVE-2026-46388 4.4 MEDIUM osquery: Unprivileged users can temporarily read file carve contents
CVE-2026-54001 osquery: Heap buffer overflow via `authenticode` table (Windows)

IV. Related Vulnerabilities

Same product: osquery
Same vendor: osquery
Same weakness: CWE-122

V. Comments for CVE-2026-54000

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