CVE-2020-13866Public exploit

Local privilege escalation via writable service executable

Published Jun 8, 2020 · Updated Aug 4, 2024

Privilege escalation in Qbik WinGate 9.4.1.5998 allows local users to execute arbitrary code as SYSTEM by replacing WinGate.exe. The installation assigns Authenticated Users full control over WinGate.exe, allowing a Trojan executable to replace the privileged binary. A WinGate restart or system reboot is required to launch the replacement under the SYSTEM account.

CVSS severity7.8
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Qbik WinGate 9.4.1.5998 allows local users to execute arbitrary code as SYSTEM by replacing WinGate.exe. The installation assigns Authenticated Users full control over WinGate.exe, allowing a Trojan executable to replace the privileged binary. A WinGate restart or system reboot is required to launch the replacement under the SYSTEM account.

The record

CVE
CVE-2020-13866
Published
Jun 8, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732, T1574.010
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
T1574.010Services File Permissions Weakness

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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