Patch tracker / CVE reference / CVE-2025-55337
CVE-2025-55337
CVE-2025-55337 is a medium severity Microsoft vulnerability with a CVSS score of 6.1. Microsoft has shipped the fix: deploy the update below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.
Risk summary
Not in the CISA KEV catalog. EPSS exploit probability 6.3%. CVSS 6.1 (Medium).
This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.
This fifth BitLocker security feature bypass extends the pattern to Windows Server 2025 Server Core installations as well as Windows 11 25H2, still Critical 9.9 with a 6 percent EPSS score. Server Core's inclusion here matters because BitLocker is also commonly used to protect data volumes on servers, not just client laptops, broadening where this fix needs to land. It is not confirmed exploited or tied to ransomware.
Do this: Include Windows Server 2025 Server Core hosts using BitLocker volume encryption in this patch rollout, not just client devices.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2025-55337
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Official patch(es) for CVE-2025-55337
Lower priority: patch in your normal cycle. In Intune or Defender, confirm whether the fixing update KB5066835 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.
Apply the Microsoft security update below to fix CVE-2025-55337. Each KB page carries the Microsoft Update Catalog download, Microsoft's known issues for the update, a copy-paste PowerShell check for whether it is installed, and the Senserva AI read.
Scope and sources
- Affected products
- Fixed by the same update
- Authoritative references
Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.