Patch tracker / CVE reference / CVE-2025-33073

CVE-2025-33073

CVE-2025-33073 is a high severity Microsoft vulnerability with a CVSS score of 8.8. It is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it in the wild, which makes it a fix-first item. Microsoft has shipped the fix: deploy one of the 16 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

HighCISA KEV

8.8

CVSS

85%

EPSS, 30 days

High

Severity

Yes

Exploited in the wild

Listed in the CISA Known Exploited Vulnerabilities catalog, confirmed exploited in the wild. EPSS exploit probability 85%. CVSS 8.8 (High).

This CVE is among the top 5% of tracked Microsoft CVEs by EPSS exploit probability, and one of 3 actively-exploited CVEs in June 2025.

Senserva AI Opinion for CVE-2025-33073

CVE-2025-33073 is a Windows SMB Client elevation of privilege flaw carrying High severity (CVSS 8.8) that CISA confirmed as exploited in the wild on 2025-10-20. It affects Windows 10 Version 1809 (32-bit and x64) and Windows Server 2019, and the 81% EPSS score plus KEV listing means attackers are actively abusing the SMB client path to gain higher privileges. Any domain-joined 2019 servers or 1809 endpoints still on that build are the exposure point right now.

Do this: Deploy the Microsoft SMB client patch for CVE-2025-33073 to all Windows 10 1809 and Windows Server 2019 systems immediately, prioritizing internet-facing and domain-joined hosts.

AI-generated from public data, 2026-07-25. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2025-33073

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

I am an IT admin assessing a vulnerability. Facts for CVE-2025-33073 (source: https://senserva.com/cve/CVE-2025-33073.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2025-33073: High severity Microsoft vulnerability, CVSS 8.8
- EPSS 30-day exploitation probability: 85%
- Actively exploited (CISA KEV): YES
- Fixed by: KB5060118, KB5060525, KB5060526, KB5060531, KB5060533, KB5060841, KB5060842, KB5060998, KB5060999, KB5061010, KB5061018, KB5061026, KB5061036, KB5061059, KB5061072, KB5061078
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) What to patch or mitigate first. 4) How to check whether my devices are exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch now

Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.

Fixed by KB5060118 and 15 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.

Do this now: Patch now and verify deployment on every exposed device.

Official patch(es) for CVE-2025-33073

Treat as urgent: it is being exploited in the wild (CISA KEV), so patch ahead of items that are not. In Intune or Defender, confirm whether the fixing updates KB5060118, KB5060525, KB5060526, KB5060531, KB5060533, KB5060841, KB5060842, KB5060998, KB5060999, KB5061010, KB5061018, KB5061026, KB5061036, KB5061059, KB5061072, KB5061078 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-2025-33073. 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.

KB5060118 KB5060525 KB5060526 KB5060531 KB5060533 KB5060841 KB5060842 KB5060998 KB5060999 KB5061010 KB5061018 KB5061026 KB5061036 KB5061059 KB5061072 KB5061078

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

CVE-2025-33073

Risk summary

Official patch(es) for CVE-2025-33073

Scope and sources