PT-2020-4275 · Microsoft · Windows Application Compatibility Client Library+1

Published 2020-10-13 · Updated 2023-12-31 · CVE-2020-16920

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Windows Application Compatibility Client Library (affected versions not specified)

Description: The issue is related to errors in handling Windows registry operations by the Windows Application Compatibility Client Library. This could allow an attacker to gain elevated privileges. To exploit the issue, an attacker would first need code execution on a victim system and then run a specially crafted application.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-264

Related Identifiers

BDU:2020-04767

CVE-2020-16920

Affected Products

Windows

Windows Application Compatibility Client Library

References · 7

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2020-16920 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-16920 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16920 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16920 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-16920 · Security Note
• https://bdu.fstec.ru/vul/2020-04767 · Security Note
• https://cybersecurity-help.cz/vdb/SB2020101348 · Note