CVE-2020-10234: The AscRegistryFilter.sys kernel driver in IObit Advanced SystemCare 13.2 allows an unprivileged user to send

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MEDIUM 6.5DOWNGRADE

CVE-2020-10234 is a medium-severity flaw (CVSS 6.5) affecting advanced systemcare. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The AscRegistryFilter.sys kernel driver in IObit Advanced SystemCare 13.2 allows an unprivileged user to send an IOCTL to the device driver. If the user provides a NULL entry for the dwIoControlCode parameter, a kernel panic (aka BSOD) follows. The IOCTL codes can be found in the dispatch function: 0x8001E000, 0x8001E004, 0x8001E008, 0x8001E00C, 0x8001E010, 0x8001E014, 0x8001E020, 0x8001E024, 0x8001E040, 0x8001E044, and 0x8001E048. \DosDevices\As

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	3.3% (top 12%)
CISA exploited list	No
Published	2021-02-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: iobit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-02-05 19:15 UTCPublished CVE record published
2026-06-17 02:47 UTCUpdated Record last modified

iobit advanced systemcare DOWNGRADE

Affected: 13.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.2

1. Check installed version

apt-cache policy advanced-systemcare || rpm -q advanced-systemcare || advanced-systemcare --version

2. No fixed release: DOWNGRADE to a release before 13.2 (Debian / Ubuntu)

apt-cache madison advanced-systemcare sudo apt install advanced-systemcare=<VERSION_BEFORE_13.2> sudo apt-mark hold advanced-systemcare

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list advanced-systemcare sudo dnf downgrade advanced-systemcare-<VERSION_BEFORE_13.2> sudo dnf versionlock add advanced-systemcare

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-10234?

advanced systemcare: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-10234 being exploited?

CVE-2020-10234 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-10234 affect?

CVE-2020-10234 affects advanced systemcare. Severity is medium (CVSS 6.5). The AscRegistryFilter.sys kernel driver in IObit Advanced SystemCare 13.2 allows an unprivileged user to send an IOCTL to the device driver. If the user provides a NULL entry for the dwIoControlCode parameter, a kernel panic (aka BSOD) foll

How urgent is CVE-2020-10234?

Priority 50/100. Public exploit reference

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References

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