| CVE ID | CVE-2021-27077 |
| CVSS SCORE | 7.8, AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
| AFFECTED VENDORS |
Microsoft |
| AFFECTED PRODUCTS |
Windows |
| VULNERABILITY DETAILS |
This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the win32kfull.sys driver. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. |
| ADDITIONAL DETAILS |
Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27077 |
| DISCLOSURE TIMELINE |
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| CREDIT | Marcin Wiazowski |
