CVE-2020-22057Public exploit

Local system reboot via permissive driver device access

Published Dec 28, 2021 · Updated Aug 4, 2024

Improper access control in EVGA Precision XOC 6.2.7 allows local users to access hardware through its low-level drivers. WinRin0x64.sys and WinRing0.sys keep the default device security descriptor, so a nonprivileged process can open WinRing0_1_2_0 and send port-I/O controls. A demonstrated local call writes the keyboard-controller reset port and immediately reboots Windows, while the record also identifies exposure of sensitive components and data.

CVSS severity9.1
Critical
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in EVGA Precision XOC 6.2.7 allows local users to access hardware through its low-level drivers. WinRin0x64.sys and WinRing0.sys keep the default device security descriptor, so a nonprivileged process can open WinRing0_1_2_0 and send port-I/O controls. A demonstrated local call writes the keyboard-controller reset port and immediately reboots Windows, while the record also identifies exposure of sensitive components and data.

The record

CVE
CVE-2020-22057
Published
Dec 28, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1529
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 28, 2021CVE 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

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
6.4NVDAV:N/AC:L/Au:N/C:P/I:N/A:P

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1529System Shutdown/Reboot

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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