Patch tracker / CVE reference / CVE-2025-33071

CVE-2025-33071

CVE-2025-33071 is a high severity Microsoft vulnerability with a CVSS score of 8.1. Its EPSS score puts the probability of exploitation in the next 30 days at 85%. Microsoft has shipped the fix: deploy one of the 9 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

High

8.1

CVSS

85%

EPSS, 30 days

High

Severity

Not in the CISA KEV catalog. EPSS exploit probability 85%. CVSS 8.1 (High).

This CVE is among the top 5% of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2025-33071

CVE-2025-33071 is a remote code execution flaw in the Windows KDC Proxy Service (KPSSVC), the component that relays Kerberos authentication over HTTPS for remote clients, on Windows Server 2019 and 2022. The KDC Proxy role is often exposed to the internet to support remote access scenarios, which is what makes an 81% EPSS score concerning even though it is not yet in CISA KEV. Servers running this proxy face pre-authentication attack surface reachable from outside your network.

Do this: Identify any Server 2019 or 2022 hosts running the KDC Proxy Service (KPSSVC), apply Microsoft's June 2025 patch, and restrict external exposure of the proxy endpoint until patched.

AI-generated from public data, 2026-07-26. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2025-33071

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-2025-33071 (source: https://senserva.com/cve/CVE-2025-33071.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2025-33071: High severity Microsoft vulnerability, CVSS 8.1
- EPSS 30-day exploitation probability: 85%
- Actively exploited (CISA KEV): no
- Fixed by: KB5060118, KB5060525, KB5060526, KB5060531, KB5060841, KB5060842, KB5061010, KB5061018, KB5061059
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 this cycle

Not confirmed exploited yet, but the 30-day exploit probability is high (EPSS 85%).

Fixed by KB5060118 and 8 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.

Do this now: Patch in this maintenance window; do not let it slip to the next one.

Official patch(es) for CVE-2025-33071

High priority: EPSS puts the odds of near-term exploitation high. In Intune or Defender, confirm whether the fixing updates KB5060118, KB5060525, KB5060526, KB5060531, KB5060841, KB5060842, KB5061010, KB5061018, KB5061059 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-2025-33071. 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 KB5060841 KB5060842 KB5061010 KB5061018 KB5061059

Scope and sources

Affected products

Fixed by the same updates

CVE-2025-33053 CVE-2025-33073 CVE-2025-33064 CVE-2025-33066 CVE-2025-33067 CVE-2025-29828 CVE-2025-33070 CVE-2025-49735

Authoritative references

Official CVE record (cve.org)NVD detail Microsoft MSRC FIRST.org EPSS

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