CVE-2025-49677 json
Microsoft Brokering File System Elevation of Privilege Vulnerability
published 2025-07-08 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-20639
- cvss
- 7.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 1
- Exploit-DB
Summary
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
Patch / fix
- Microsoft Windows 11 version 22H2 10.0.22621.5624
Timeline
- Published
- First public exploit (EDB-52360)
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 16 mo ago
Exploit prediction
1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-52360 Microsoft Brokering File System Windows 11 Version 22H2 - Elevation of Privilege local, 2025-07-16
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Windows 11 version 22H2
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2025-49677
vendor-advisory, patch
Sources
- CVE List CVE-2025-49677
- NVD CVE-2025-49677
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