CVE-2021-40449
Microsoft Windows Win32k Privilege Escalation Vulnerability
MITRE ATT&CK techniques
How this vulnerability maps to adversary behaviour, from the Center for Threat-Informed Defense's public CVE→ATT&CK mappings. Use it to check whether your detections already cover the technique.
| Technique | Name | Relationship |
|---|---|---|
| T1566 | Phishing | exploitation technique |
| T1068 | Exploitation for Privilege Escalation | primary impact |
| T1016 | System Network Configuration Discovery | secondary impact |
| T1027 | Obfuscated Files or Information | secondary impact |
| T1059.003 | Windows Command Shell | secondary impact |
| T1071.001 | Web Protocols | secondary impact |
| T1082 | System Information Discovery | secondary impact |
| T1573.001 | Symmetric Cryptography | secondary impact |
Summary
Unspecified vulnerability allows for an authenticated user to escalate privileges.
Affected software
Vendor: Microsoft · Product: Windows
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Microsoft
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2021-34473 | Microsoft Exchange Server Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2021-26855 | Microsoft Exchange Server Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2019-0708 | Microsoft Remote Desktop Services Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2015-1635 | Microsoft HTTP.sys Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2021-34523 | Microsoft Exchange Server Privilege Escalation Vulnerability | 100.0% | Yes |
| CVE-2022-41082 | Microsoft Exchange Server Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2012-0158 | Microsoft MSCOMCTL.OCX Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2020-0688 | Microsoft Exchange Server Validation Key Remote Code Execution Vulnerability | 100.0% | Yes |
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