Attacker Value
Unknown
(1 user assessed)
Exploitability
Unknown
(1 user assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
1

CVE-2021-28310

Disclosure Date: April 13, 2021
Exploited in the Wild
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

Win32k Elevation of Privilege Vulnerability

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1
Technical Analysis

Ah, another day, another Win32k privilege escalation used in the wild. Securelist has a good write-up on this bug, which they discovered because it was used in a BITTER APT zero-day attack in (it sounds like) conjunction with CVE-2021-1732 (there’s a Metasploit module for the second vuln).

CVSS V3 Severity and Metrics
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • microsoft

Products

  • windows 10 1803,
  • windows 10 1809,
  • windows 10 1909,
  • windows 10 2004,
  • windows 10 20h2,
  • windows server 2016 1909,
  • windows server 2016 2004,
  • windows server 2016 20h2,
  • windows server 2019 -

Exploited in the Wild

Reported by:

Additional Info

Technical Analysis