CVE-2020-10234Public exploit

Host crash via null kernel-driver IOCTL buffer

Published Feb 5, 2021 · Updated Aug 4, 2024

Denial of service in IObit Advanced SystemCare 13.2 allows local users to crash Windows through an AscRegistryFilter.sys IOCTL. The driver's dispatch path accepts IOCTL 0x8001E000 with a NULL user buffer and zero length, which triggers a kernel panic. Any unprivileged local process able to open the AscRegistryFilter device can cause a BSOD and interrupt the entire host.

CVSS severity6.5
Medium
EPSS probability3.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in IObit Advanced SystemCare 13.2 allows local users to crash Windows through an AscRegistryFilter.sys IOCTL. The driver's dispatch path accepts IOCTL 0x8001E000 with a NULL user buffer and zero length, which triggers a kernel panic. Any unprivileged local process able to open the AscRegistryFilter device can cause a BSOD and interrupt the entire host.

The record

CVE
CVE-2020-10234
Published
Feb 5, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 5, 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

6.8NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:C
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 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

T1499.004Endpoint Denial of Service: Application or System Exploitation

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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