#windows

Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line.

Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line.

Metro UI v4.4.0 to v4.5.0 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via the Javascript function.

**What privileges could an attacker gain?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to win a race condition.

**According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?** In this case, a successful attack could be performed from a low privilege AppContainer. The attacker could elevate their privileges and execute code or access resources at a higher integrity level than that of the AppContainer execution environment.

**What privileges could an attacker gain?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

**What type of privileges could an attacker gain through this vulnerability?** An attacker could use this vulnerability to elevate privileges from Low Integrity Level in a contained ("sandboxed") excution environment to escalate to a Medium Integrity Level or a High Integrity Level. Please refer to https://learn.microsoft.com/en-us/windows/win32/secauthz/appcontainer-isolation and https://learn.microsoft.com/en-us/windows/win32/secauthz/mandatory-integrity-control

**What privileges could an attacker gain?** An attacker who successfully exploited this vulnerability could execute RPC functions that are restricted to local clients only.

**What privileges could an attacker gain?** An attacker who successfully exploited this vulnerability could gain specific limited SYSTEM privileges.