Patch tracker / CVE reference / CVE-2025-26633

CVE-2025-26633

CVE-2025-26633 is a Microsoft vulnerability that Microsoft rates Important, with a CVSS score of 7.0 (High). It is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it in the wild, including in ransomware campaigns, 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.

Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date. If you are unsure, check the linked source before you act, and tell us when we are wrong so we can fix it.

Microsoft rates it Important. CVSS 7.0 (High). Fixed by 16 Microsoft security updates.

Senserva AI read on CVE-2025-26633 Official patches for CVE-2025-26633 Change history Admin questions #7 hottest Microsoft CVE right now

Risk summary

HighCISA KEVRansomware

7.0

CVSS v3

30%

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 30%. CVSS 7.0 (High). Linked to ransomware activity.

This CVE is among the top 5% of tracked Microsoft CVEs by EPSS exploit probability, and one of 7 actively-exploited CVEs in March 2025.

Senserva AI Opinion for CVE-2025-26633

Ransomware operators exploited this Microsoft Management Console security feature bypass, KEV-listed on 2025-03-11 with a 59% EPSS score. The bypass lets crafted console files evade a protection that would otherwise warn users, and the ransomware association means it ships inside full intrusion chains, not just proofs of concept.

Do this: Deploy the March 2025 updates and block untrusted .msc files at email and proxy gateways.

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

Patch immediately

Exploited in the wild and used in ransomware campaigns.

Fixed by KB5053594 and 15 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.

Do this now: Move this ahead of everything else in the queue, then verify the fix actually landed on every exposed device.

Senserva AI Opinion and rich prompt for CVE-2025-26633

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-2025-26633 (source: https://senserva.com/cve/CVE-2025-26633.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed daily (early morning US Central)):
- CVE-2025-26633: Microsoft vulnerability, Microsoft rating Important, CVSS 7.0 (High)
- EPSS 30-day exploitation probability: 30%
- Actively exploited (CISA KEV): YES, ransomware-linked
- Fixed by: KB5053594, KB5053596, KB5053598, KB5053599, KB5053602, KB5053603, KB5053606, KB5053618, KB5053620, KB5053627, KB5053636, KB5053638, KB5053886, KB5053887, KB5053888, KB5053995
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.

Official patch(es) for CVE-2025-26633

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 KB5053594, KB5053596, KB5053598, KB5053599, KB5053602, KB5053603, KB5053606, KB5053618, KB5053620, KB5053627, KB5053636, KB5053638, KB5053886, KB5053887, KB5053888, KB5053995 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-2025-26633. 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.

KB5053594 KB5053596 KB5053598 KB5053599 KB5053602 KB5053603 KB5053606 KB5053618 KB5053620 KB5053627 KB5053636 KB5053638 KB5053886 KB5053887 KB5053888 KB5053995

Scope and sources

Affected products

Fixed by the same updates

CVE-2025-24985 CVE-2025-24993 CVE-2025-24983 CVE-2025-24054 CVE-2025-24991 CVE-2025-24984 CVE-2025-24051 CVE-2025-24056

Authoritative references

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

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