What is CVE-2020-14956?

CVE-2020-14956 is a high-severity vulnerability in Arswp Windows Cleanup Assistant, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2020-06-30.

How severe is CVE-2020-14956?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2020-14956 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Arswp Windows Cleanup Assistant

CVE-2020-14956

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2020-06-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (26.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Arswp Windows Cleanup Assistant — versions 3.2

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

0xT11/CVE-POC

References

github.com/y5s5k5/CVE-2020-14957-CVE-2020-14956 (Third Party Advisory)
www.arswp.com/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-14956?: CVE-2020-14956 is a high-severity vulnerability in Arswp Windows Cleanup Assistant, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2020-06-30.
How severe is CVE-2020-14956?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-14956 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.