PT-2021-2331 · Microsoft · Windows

Mateusz Jurczyk · Published 2021-03-09 · Updated 2023-12-29 · CVE-2021-26863

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

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

Description The issue is related to insecure privilege management in the Win32k component of the Windows operating system. It allows an attacker to elevate their privileges. There is a race condition and use-after-free vulnerability in the NtGdiGetDeviceCapsAll function of the Windows kernel.

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

Related Identifiers

BDU:2021-01566

CVE-2021-26863

Affected Products

Windows

References · 16

• 🔥 http://packetstormsecurity.com/files/161768/Microsoft-Windows-Kernel-NtGdiGetDeviceCapsAll-Race-Condition-Use-After-Free.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-26863 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-26863 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01566 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26863 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-26863 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26863 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26863 · Security Note
• https://t.me/cvenotify/65767 · Telegram Post
• https://t.me/cvenotify/13108 · Telegram Post
• https://t.me/cybersecuritytechnologies/2907 · Telegram Post
• https://t.me/cvenotify/11424 · Telegram Post
• https://t.me/cibsecurity/24764 · Telegram Post
• https://t.me/hybgl/800 · Telegram Post
• https://t.me/cvenotify/13860 · Telegram Post