Microsoft Speech Application Programming Interface (SAPI) Remote Code Execution Vulnerability

How could an attacker exploit this vulnerability?
An attacker could exploit a use after free vulnerability within the OS SAPI component to execute arbitrary code in the context of the compromised user to disclose sensitive information, compromise system integrity or impact the availability of the victim's system.

According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?
This vulnerability could lead to a browser sandbox escape.

According to the CVSS metric, the attack vector is network (AV:N) and the user interaction is required (UI:R). What is the target context of the remote code execution?
This attack requires an authenticated client to click a link in order for an unauthenticated attacker to initiate remote code execution.

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.

Security updates
10.0.20348.2762 — https://support.microsoft.com/help/5044281
10.0.22000.3260 — https://support.microsoft.com/help/5044280
10.0.19044.5011 — https://support.microsoft.com/help/5044273
10.0.22621.4317 — https://support.microsoft.com/help/5044285
10.0.25398.1189 — https://support.microsoft.com/help/5044288
10.0.26100.2033 — https://support.microsoft.com/help/5044284