PT-2021-2382 · Microsoft · Windows

Jeongoh Kyea + 1 · Published 2021-03-09 · Updated 2023-12-29 · CVE-2021-26900

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 (affected versions not specified)

Description The issue is related to insufficient access control in the Win32k component of Windows operating systems, which can be exploited to elevate privileges using a specially crafted application. This can allow an attacker to affect the system.

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

LPE

Use After Free

Weakness Enumeration

CWE-416

CWE-264

Related Identifiers

BDU:2021-01623

CVE-2021-26900

ZDI-21-331

Affected Products

Windows

References · 16

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26900 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01623 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26900 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-26900 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-331 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-26900 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26900 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-26900 · Vendor Advisory
• https://t.me/cibsecurity/24764 · Telegram Post
• https://t.me/cvenotify/13108 · Telegram Post
• https://t.me/cvenotify/13860 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021030915 · Note
• https://t.me/apt_notes/140 · Telegram Post
• https://t.me/cibsecurity/24781 · Telegram Post
• https://t.me/cybersecuritytechnologies/3299 · Telegram Post