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CVE-2025-21200: Windows Telephony Service Remote Code Execution Vulnerability

**How could an attacker exploit this vulnerability?** An attacker could exploit this vulnerability by tricking a user into sending a request to a malicious server. This could result in the server returning malicious data that might cause arbitrary code execution on the user's system.

Microsoft Security Response Center
#vulnerability#windows#rce#Windows Telephony Service#Security Vulnerability
CVE-2025-21190: Windows Telephony Service Remote Code Execution Vulnerability

**How could an attacker exploit this vulnerability?** An attacker could exploit this vulnerability by tricking a user into sending a request to a malicious server. This could result in the server returning malicious data that might cause arbitrary code execution on the user's system.

CVE-2025-21194: Microsoft Surface Security Feature Bypass Vulnerability

**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 multiple conditions to be met, such as specific application behavior, user actions, manipulation of parameters passed to a function, and impersonation of an integrity level token.

CVE-2025-21259: Microsoft Outlook Spoofing Vulnerability

**According to the CVSS metric, Integrity (I:L) is Low. What does that mean for this vulnerability?** An attacker's message can inherit the sender's email address from another message in the UI. The attacker cannot control which message it inherits from. This issue occurs exclusively for messages in the Junk folder, as it is the only folder where the app displays the sender's email address. The attacker cannot affect confidentiality or availability.

CVE-2025-21410: Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

**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 admin user on the client to connect to a malicious server, and that could allow the attacker to gain code execution on the client.

CVE-2025-21407: Windows Telephony Service Remote Code Execution Vulnerability

**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 a client to connect to a malicious server, and that could allow the attacker to gain code execution on the client.

CVE-2025-21406: Windows Telephony Service Remote Code Execution Vulnerability

**How could an attacker exploit this vulnerability?** An attacker could exploit this vulnerability by tricking a user into sending a request to a malicious server. This could result in the server returning malicious data that might cause arbitrary code execution on the user's system.

CVE-2025-21208: Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

**How could an attacker exploit this vulnerability?** An attacker could exploit this vulnerability by tricking a user into sending a request to a malicious server. This could result in the server returning malicious data that might cause arbitrary code execution on the user's system.

CVE-2025-21183: Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability

**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.

CVE-2025-21182: Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability

**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.