CVE-2021-27515 is a vulnerability that was discovered in April 2021. It affects the Windows Win32k component, which is responsible for managing user interface elements such as windows, menus, and buttons. The vulnerability allows an attacker to execute arbitrary code with kernel privileges, potentially leading to a complete takeover of the affected system.
The vulnerability was reported to Microsoft by a security researcher on April 20, 2021. Microsoft released a patch for the vulnerability on May 11, 2021, as part of its monthly Patch Tuesday updates. As with all critical vulnerabilities, users are advised to apply the patch as soon as possible to prevent exploitation.
Although there have been no reports of active exploitation of CVE-2021-27515 in the wild, it is still considered a serious threat. Attackers who successfully exploit this vulnerability could gain full control of a Windows system, allowing them to steal sensitive data, install malware, or carry out other malicious activities. Therefore, it is crucial that organizations take immediate action to patch any vulnerable systems to protect against potential attacks.