PT-2021-5042 · Microsoft · Windows Core Shell Si Host Extension Framework For Composable Shell+1

Published 2021-11-09 · Updated 2023-12-28 · CVE-2021-42286

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 Core Shell SI Host Extension Framework for Composable Shell (affected versions not specified)

Description The issue is related to insufficient access restrictions in the Windows Core Shell SI Host Extension Framework for Composable Shell component of the Windows operating system. This can be exploited to elevate privileges.

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

LPE

Improper Privilege Management

Weakness Enumeration

CWE-264

CWE-269

Related Identifiers

BDU:2021-05812

CVE-2021-42286

Affected Products

Windows

Windows Core Shell Si Host Extension Framework For Composable Shell

References · 8

• https://bdu.fstec.ru/vul/2021-05812 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42286 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42286 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-42286 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-42286 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42286 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42286 · Vendor Advisory
• https://cybersecurity-help.cz/vdb/SB2021110918 · Note