Privilege escalation in Microsoft Windows
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-28310 |
| CWE-ID | CWE-119 |
| Exploitation vector | Local |
| Public exploit | This vulnerability is being exploited in the wild. |
| Vulnerable software Subscribe |
Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Buffer overflow
EUVDB-ID: #VU52164
Risk: High
CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2021-28310
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within win32k.sys driver in Microsoft Windows. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code with elevated privileges.
Note, the vulnerability is being actively exploited in the wild.
Install updates from vendor's website.
Vulnerable software versionsWindows: 10 20H2 - 10 2004
Windows Server: 2019 - 2019 2004
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
