Microsoft Patch Tuesday March 2025

Microsoft has rolled out its March 2025 Patch Tuesday update, addressing a total of 57 vulnerabilities across its software ecosystem, including 6 actively exploited Zero-day vulnerabilities.

This release includes fixes for:

• 23 Remote Code Execution Vulnerabilities
• 23 Elevation of Privilege Vulnerabilities
• 3 Security Feature Bypass Vulnerabilities
• 4 Information Disclosure Vulnerabilities
• 3 Spoofing Vulnerabilities
• 1 Denial of Service Vulnerability

Issued on the second Tuesday of each month, this update is vital for users and administrators, as attackers are already exploiting several of these flaws in the wild.

Below is a detailed look at the six zero-day vulnerabilities patched in this release, alongside the broader scope of the update.

Zero-Day Vulnerabilities

CVE-2025-24983: Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability

This zero-day allows local attackers to escalate privileges to SYSTEM level by winning a race condition.

Discovered by Filip Jurčacko of ESET, this use-after-free flaw stems from improper memory management, enabling attackers to execute malicious code on already compromised systems.

While Microsoft has not disclosed specific attack details, ESET is expected to release further insights, highlighting the severity of this privilege escalation threat.

CVE-2025-24984: Windows NTFS Information Disclosure Vulnerability

Attackers with physical access to a device can exploit this vulnerability by inserting a malicious USB drive, allowing them to read portions of heap memory and extract sensitive information.

Reported anonymously, this flaw poses a significant risk in environments where physical security is not tightly controlled, emphasizing the need for robust endpoint protection.

CVE-2025-24985: Windows Fast FAT File System Driver Remote Code Execution Vulnerability

Caused by an integer overflow and heap-based buffer overflow in the Windows Fast FAT Driver, this vulnerability enables remote code execution.

Attackers can exploit it by tricking users into mounting a specially crafted virtual hard disk (VHD), a tactic previously seen in phishing campaigns and pirated software distribution.

Microsoft notes this flaw, also anonymously disclosed, underscores the dangers of unverified file sources.

CVE-2025-24991: Windows NTFS Information Disclosure Vulnerability

Similar to CVE-2025-24984, this flaw allows attackers to access small portions of heap memory by convincing a user to mount a malicious VHD file.

Disclosed anonymously, it highlights a recurring vulnerability in the NTFS system, potentially exposing sensitive data to attackers who can socially engineer their targets effectively.

CVE-2025-24993: Windows NTFS Remote Code Execution Vulnerability

This zero-day involves a heap-based buffer overflow in the NTFS system, enabling attackers to execute code remotely.

Like CVE-2025-24985, exploitation requires a user to mount a malicious VHD, making it a potent threat in targeted attacks.

Reported anonymously, it reinforces the critical need for user awareness and timely patching.

CVE-2025-26633: Microsoft Management Console Security Feature Bypass Vulnerability

This vulnerability allows attackers to bypass security features in the Microsoft Management Console by tricking users into interacting with malicious files or links.

Though specific exploitation details are limited, this anonymously reported flaw could grant unauthorized access to administrative tools, amplifying its potential impact when paired with other exploits.

In addition to these zero-days, the update addresses a seventh zero-day that was publicly disclosed but not actively exploited.

With 57 total fixes, including critical remote code execution flaws, Microsoft urges immediate deployment to mitigate ongoing threats.

The high number of actively exploited vulnerabilities suggests advanced threat actors are already leveraging these weaknesses, making this Patch Tuesday a pivotal moment for cybersecurity in 2025.

Microsoft Patch Tuesday March 2025 Vulnerabilities List

How to Update

Users and administrators can apply these updates via:

1. Windows Update: Navigate to Settings > Update & Security > Windows Update and check for updates.
2. Microsoft Update Catalog: Download individual patches for offline installation.
3. WSUS (Windows Server Update Services): For enterprise environments, managing updates centrally.

Microsoft’s March 2025 Patch Tuesday underscores the growing complexity of cybersecurity threats facing organizations today.

The critical nature of several vulnerabilities makes it imperative for IT teams to act swiftly in deploying these fixes. As always, users are encouraged to remain vigilant against phishing attempts and other attack vectors that might exploit unpatched systems.

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