CVE-2020-14956

Name: CVE-2020-14956
Creator: NVD / NIST
Published: 2020-06-30T15:15:10.13+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2020-14956 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In Windows cleaning assistant 3.2, the driver file (AtpKrnl.sys) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x223CCA.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

In Windows cleaning assistant 3.2, the driver file (AtpKrnl.sys) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x223CCA.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.35%

26.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Arswp	Windows Cleanup Assistant	3.2

References

http://www.arswp.com/Vendor Advisory
https://github.com/y5s5k5/CVE-2020-14957-CVE-2020-14956Third Party Advisory
http://www.arswp.com/Vendor Advisory
https://github.com/y5s5k5/CVE-2020-14957-CVE-2020-14956Third Party Advisory

Timeline

Published: Jun 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14956?

How severe is CVE-2020-14956?

CVE-2020-14956 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14956?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-14956?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST