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TI-2020-08955 Aliases CVE-2020-11081

osquery susceptible to DLL search order hijacking of zlib1.dll

Priority LOW 36CWE-114Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-426.

Summary

osquery before version 4.4.0 enables a privilege escalation vulnerability. If a Window system is configured with a PATH that contains a user-writable directory then a local user may write a zlib1.dll DLL, which osquery will attempt to load. Since osquery runs with elevated privileges this enables local escalation. This is fixed in version 4.4.0.

Why it matters now

EPSS 0.00587 48th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed osquery (osquery): 4.4.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
osqueryosquerybefore 4.4.04.4.0Patch availableCNA
  • osquery Vendorosquery Affected before 4.4.0 Fixed in 4.4.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:linuxfoundation:osquery:*:*:*:*:*:*:*:*before 4.4.0Vulnerablebackstage
  • cpe:2.3:a:linuxfoundation:osquery:*:*:*:*:*:*:*:* Versions before 4.4.0 Vulnerable ·backstage

Remediation

  • Fix · CNA osquery (osquery) Fixed in 4.4.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-11081

References

Exploit 1

Patch 2

Advisory 2

  • TI-2026-38950 osquery: Heap buffer overflow via `authenticode` table (Windows) CVSS 4.0HIGH 7.0
  • 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