PT-2021-4389 · Microsoft · Windows Appcontainer+1

James Forshaw · Published 2021-10-12 · Updated 2023-08-01 · CVE-2021-40476

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows AppContainer (affected versions not specified)

Description The issue is related to errors in privilege management within the isolated software environment AppContainer of Microsoft Windows operating systems. It allows an attacker to elevate their privileges.

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

LPE

Insufficiently Protected Credentials

Weakness Enumeration

CWE-522

CWE-264

Related Identifiers

BDU:2021-05019

CVE-2021-40476

Affected Products

Windows

Windows Appcontainer

References · 10

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40476 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-40476 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40476 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05019 · Security Note
• https://osv.dev/vulnerability/CVE-2021-40476 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-40476 · Vendor Advisory
• https://t.me/cvenotify/24218 · Telegram Post
• http://packetstormsecurity.com/files/164942/Microsoft-Windows-WSAQuerySocketSecurity-AppContainer-Privilege-Escalation.html · Note
• https://t.me/cvenotify/23272 · Telegram Post
• http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40476 · Note