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CVE-2025-21204: Windows Process Activation Elevation of Privilege Vulnerability

Improper link resolution before file access ('link following') in Windows Update Stack allows an authorized attacker to elevate privileges locally.

Microsoft Security Response Center
#vulnerability#windows#auth#Windows Update Stack#Security Vulnerability
CVE-2025-21203: Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability

**According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?** This attack requires an admin user on the client to connect to a malicious server and then take specific actions which could result in information disclosure.

CVE-2025-21205: 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-2025-21191: Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.

CVE-2025-21197: Windows NTFS Information Disclosure Vulnerability

**What type of information could be disclosed by this vulnerability?** The type of information that could be disclosed if an attacker successfully exploited this vulnerability includes unauthorized access to the file system, specifically file path information.

CVE-2025-24073: Microsoft DWM Core Library Elevation of Privilege Vulnerability

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

CVE-2025-24074: Microsoft DWM Core Library Elevation of Privilege Vulnerability

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

CVE-2025-29823: Microsoft Excel Remote Code Execution Vulnerability

**According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?** The word **Remote** in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. For example, when the score indicates that the **Attack Vector** is **Local** and **User Interaction** is **Required**, this could describe an exploit in which an attacker, through social engineering, convinces a victim to download and open a specially crafted file from a website which leads to a local attack on their computer.