Patch tracker / CVE reference / CVE-2026-50508

CVE-2026-50508

CVE-2026-50508 is a Microsoft vulnerability that Microsoft rates Important, with a CVSS score of 6.5 (Medium). Microsoft has shipped the fix: deploy one of the 6 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

Medium
6.5
CVSS v3
2.3%
EPSS, 30 days
Medium
Severity

Not in the CISA KEV catalog. EPSS exploit probability 2.3%. CVSS 6.5 (Medium).

This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2026-50508

NTLM spoofing on Windows Server 2022 and Server 2004 core carries a Critical 9.8 rating, and NTLM relay-style weaknesses have a long history of enabling lateral movement. An attacker who can spoof within the NTLM exchange may impersonate a server or coerce authentication. Domain member servers exposed to internal clients are the exposure point.

Do this: Patch Windows Server 2022 and 2004 core hosts, and where feasible move toward disabling NTLM in favor of Kerberos to shrink this attack surface.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2026-50508

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Schedule normally
No exploitation observed as of 2026-10-14: not in the CISA KEV catalog, EPSS 2%.
Fixed by KB5093998 and 5 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.
Do this now: Deploy with your normal update cycle. This page refreshes daily; the verdict changes the day the data does.

Official patch(es) for CVE-2026-50508

Lower priority: patch in your normal cycle. In Intune or Defender, confirm whether the fixing updates KB5093998, KB5094041, KB5094042, KB5094122, KB5094127, KB5094128 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.

Apply the Microsoft security updates below to fix CVE-2026-50508. 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.

KB5093998KB5094041KB5094042KB5094122KB5094127KB5094128

Scope and sources

Affected products
Fixed by the same updates
CVE-2025-54518CVE-2026-41096CVE-2026-42990CVE-2026-44815CVE-2026-45657CVE-2026-47291CVE-2026-42904CVE-2025-10263
Authoritative references
Official CVE record (cve.org)NVD detailMicrosoft MSRCFIRST.org EPSS

Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
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