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TI-2026-38950 Aliases CVE-2026-54001

osquery: Heap buffer overflow via `authenticode` table (Windows)

Priority LOW 32CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

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 authenticode table targeting a maliciously crafted binary, due to publisher information parsing in getOriginalProgramName. 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00153 4th percentileScored 2026-11-07
Fix Fixed osquery (osquery): 5.23.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
osqueryosquerybefore 5.23.15.23.1Patch availableCNA
  • osquery Vendorosquery Affected before 5.23.1 Fixed in 5.23.1 Patch available CNA

Remediation

  • Fix · CNA osquery (osquery) Fixed in 5.23.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54001

References

Other 4

  • TI-2026-38949 osquery: Heap buffer overflow in `getProcessCurrentDirectory()` via `processes` table (Windows) CVSS 4.0HIGH 7.0
  • TI-2026-34102 osquery: Unprivileged users can temporarily read file carve contents CVSS 3.1MEDIUM 4.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences