What is the CVSS score of EUVD-2025-20633?

EUVD-2025-20633 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Windows 11 24h2 are affected by EUVD-2025-20633?

CVE-2025-49694 is a privilege escalation vulnerability in Microsoft Brokering File System that allows authenticated local users to crash or gain elevated system permissions.. A patch is available.

How to fix or mitigate EUVD-2025-20633?

Within 24 hours: Identify all systems running Microsoft Brokering File System and assess exposure scope. Within 7 days: Apply vendor-released patch to all affected systems and validate successful deployment. Within 30 days: Conduct privilege escalation attack surface review and implement principle of least privilege across local user accounts.

Windows 11 24h2 EUVD-2025-20633

| CVE-2025-49694 HIGH

NULL Pointer Dereference (CWE-476)

2025-07-08 secure@microsoft.com

Denial Of Service Null Pointer Dereference Microsoft Windows 11 24h2 Windows Server 2022 23h2 Windows Server 2025

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:30 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

10.0.26100.4652,10.0.25398.1732

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20633

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

CVE Published

Jul 08, 2025 - 17:15 nvd

HIGH 7.8

DescriptionCVE.org

Null pointer dereference in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

Analysis

Null pointer dereference in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

Technical ContextAI

A NULL pointer dereference occurs when the application attempts to use a pointer that has not been initialized or has been set to NULL.

RemediationAI

Add NULL checks before pointer dereference operations. Use static analysis to identify potential NULL pointer issues. Enable compiler warnings.

More in Windows 11 24h2

View all

CVE-2025-33053 HIGH Act Now POC

8.8 Jun 10

Windows Internet Shortcut Files (.url) contain an external control vulnerability (CVE-2025-33053, CVSS 8.8) that enables

CVE-2025-33073 HIGH Act Now POC

8.8 Jun 10

Windows SMB contains an improper access control vulnerability (CVE-2025-33073, CVSS 8.8) enabling authenticated attacker

CVE-2025-21293 HIGH Act Now POC

8.8 Jan 14

Active Directory Domain Services contains an elevation of privilege vulnerability that allows authenticated domain users

CVE-2024-43461 HIGH Act Now

8.8 Sep 10

Windows MSHTML Platform Spoofing Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitab

CVE-2025-30397 HIGH Act Now POC

7.5 May 13

Microsoft Scripting Engine contains a type confusion vulnerability allowing unauthorized remote code execution over the

CVE-2024-49039 HIGH Act Now POC

8.8 Nov 12

Windows Task Scheduler Elevation of Privilege Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is low a

CVE-2026-81963 HIGH Act Now POC

7.8 Sep 08

Symlink following (CWE-59) in the Windows Update Stack enables a locally authenticated attacker with standard user privi

CVE-2025-26633 HIGH Act Now POC

7.0 Mar 11

A security feature bypass in Microsoft Management Console (MMC) allows attackers to evade security warnings and execute

CVE-2026-68820 HIGH Act Now POC

7.0 Aug 11

Privilege escalation in the Windows Ancillary Function Driver for WinSock (afd.sys) allows a locally authenticated attac

CVE-2025-32706 HIGH Act Now POC

7.8 May 13

Windows CLFS Driver contains an input validation flaw enabling local privilege escalation, yet another CLFS kernel vulne

CVE-2024-38217 MEDIUM Act Now POC

5.4 Sep 10

Windows Mark of the Web Security Feature Bypass Vulnerability. Rated medium severity (CVSS 5.4), this vulnerability is r

CVE-2025-21418 HIGH Act Now

7.8 Feb 11

Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow enabling local privilege escalation

Same weakness CWE-476 – NULL Pointer Dereference

View all

CVE-2016-0742 HIGH

7.5

CVE-2014-3470 MEDIUM

4.3

CVE-2017-3730 HIGH POC

7.5

CVE-2017-3169 CRITICAL POC

9.8

CVE-2016-4957 HIGH

7.5

CVE-2015-3194 HIGH

7.5

CVE-2026-21525 MEDIUM

6.2

CVE-2017-0016 MEDIUM

5.9

Same technique Denial Of Service

View all

CVE-2015-5119 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2011-0611 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

CVE-2012-0507 CRITICAL POC

9.8

CVE-2014-1761 HIGH POC

7.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2011-0609 HIGH POC

7.8

EUVD-2025-20633 vulnerability details – vuln.today

Back

Windows 11 24h2 EUVD-2025-20633

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

Analysis

Technical ContextAI

RemediationAI

More in Windows 11 24h2

Same weakness CWE-476 – NULL Pointer Dereference

Same technique Denial Of Service

Share

External POC / Exploit Code