CVE detail
CVE-2025-64666
Improper input validation in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 6.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
1 source links · newest first
- December Patch Tuesday: Windows Cloud Files Mini Filter Driver hole already being exploitedCSO Online
Microsoft is finishing 2025 by issuing only 57 patches for Windows and other products for December Patch Tuesday, but one vulnerability is already being exploited as a zero day and needs to be addressed fast. It’s an escalation of privilege vulnerability in Windows Cloud Files Mini Filter Driver (CVE-2025-62221), described as a use-after-free problem in […]
newswww.csoonline.comDec 10, 2025, 1:19 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
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