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CVE-2025-53798: Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability

Buffer over-read in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to disclose information over a network.

Microsoft Security Response Center
#vulnerability#windows#auth#Windows Routing and Remote Access Service (RRAS)#Security Vulnerability
CVE-2025-53797: Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability

**What type of information could be disclosed by this vulnerability?** An attacker who successfully exploited this vulnerability could potentially read portions of heap memory.

CVE-2025-49734: PowerShell Direct Elevation of Privilege Vulnerability

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** The attacker, initially a non-admin user on the host, could hijack the PowerShell Direct session intended for communication between the admin user on host and a guest VM. This unauthorized access enables the attacker to impersonate the admin host user in communications with the guest, potentially manipulating or controlling guest-side operations.

CVE-2025-9867: Chromium: CVE-2025-9867 Inappropriate implementation in Downloads

**Why is this Chrome CVE included in the Security Update Guide?** The vulnerability assigned to this CVE is in Chromium Open Source Software (OSS) which is consumed by Microsoft Edge (Chromium-based). It is being documented in the Security Update Guide to announce that the latest version of Microsoft Edge (Chromium-based) is no longer vulnerable. **How can I see the version of the browser?** 1. In your Microsoft Edge browser, click on the 3 dots (...) on the very right-hand side of the window 2. Click on **Help and Feedback** 3. Click on **About Microsoft Edge**

CVE-2025-9866: Chromium: CVE-2025-9866 Inappropriate implementation in Extensions

**Why is this Chrome CVE included in the Security Update Guide?** The vulnerability assigned to this CVE is in Chromium Open Source Software (OSS) which is consumed by Microsoft Edge (Chromium-based). It is being documented in the Security Update Guide to announce that the latest version of Microsoft Edge (Chromium-based) is no longer vulnerable. **How can I see the version of the browser?** 1. In your Microsoft Edge browser, click on the 3 dots (...) on the very right-hand side of the window 2. Click on **Help and Feedback** 3. Click on **About Microsoft Edge**

CVE-2025-9865: Chromium: CVE-2025-9865 Inappropriate implementation in Toolbar

**Why is this Chrome CVE included in the Security Update Guide?** The vulnerability assigned to this CVE is in Chromium Open Source Software (OSS) which is consumed by Microsoft Edge (Chromium-based). It is being documented in the Security Update Guide to announce that the latest version of Microsoft Edge (Chromium-based) is no longer vulnerable. **How can I see the version of the browser?** 1. In your Microsoft Edge browser, click on the 3 dots (...) on the very right-hand side of the window 2. Click on **Help and Feedback** 3. Click on **About Microsoft Edge**

CVE-2025-9864: Chromium: CVE-2025-9864 Use after free in V8

**Why is this Chrome CVE included in the Security Update Guide?** The vulnerability assigned to this CVE is in Chromium Open Source Software (OSS) which is consumed by Microsoft Edge (Chromium-based). It is being documented in the Security Update Guide to announce that the latest version of Microsoft Edge (Chromium-based) is no longer vulnerable. **How can I see the version of the browser?** 1. In your Microsoft Edge browser, click on the 3 dots (...) on the very right-hand side of the window 2. Click on **Help and Feedback** 3. Click on **About Microsoft Edge**

CVE-2025-53791: Microsoft Edge (Chromium-based) 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 an attacker to enable Edge Split Screen mode, have a specific configuration, and run multiple pages.