PT-2021-2088 · Microsoft · Windows Installer+1

Published 2021-02-09 · Updated 2026-03-10 · CVE-2021-1727

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 Installer (affected versions not specified)

Description: The issue is related to insufficient access restrictions in the Windows Installer component of Microsoft Windows operating systems. This can allow an attacker to elevate their privileges. There is an elevation-of-privilege vulnerability that enables attackers to affect the system.

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

Exploit

LPE

Improper Privilege Management

Weakness Enumeration

CWE-269

CWE-264

Related Identifiers

BDU:2021-00940

CVE-2021-1727

Affected Products

Windows

Windows Installer

References · 11

• 🔥❌ https://github.com/klinix5/CVE-2021-1727 · Exploit, Deleted
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1727 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1727 · Security Note
• https://bdu.fstec.ru/vul/2021-00940 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-1727 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1727 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-1727 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1727 · Security Note
• https://cybersecurity-help.cz/vdb/SB2021020958 · Note
• https://t.me/cybersecuritytechnologies/2794 · Telegram Post
• https://t.me/cibsecurity/24170 · Telegram Post