Exploited CVEs / Microsoft / CVE-2026-124194

CVE-2026-124194

Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies must remediate by 2026-11-24; treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Microsoft Security Update Guide (MSRC), linked below.

Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date.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.

Senserva AI read on CVE-2026-124194 CISA required action Official fix for CVE-2026-124194 What the press says Admin questions #22 hottest CVE right now

Risk summary

MediumCISA KEV

6.5

CVSS v3 base

Not scored

EPSS exploit probability

Medium

Severity

2026-11-10

Added to KEV

2026-11-24

CISA due date

Actively exploited Microsoft Office vulnerability, Medium severity, CVSS v3 6.5. Added to the CISA KEV catalog 2026-11-10.

Microsoft calls it Microsoft Outlook Spoofing Vulnerability and rates it Moderate. Microsoft lists it for Microsoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft 365 Apps for Enterprise for 32-bit Systems. Microsoft's advisory has the full list and the fixed versions.

Patch now

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

The fix ships from the vendor: Microsoft's advisory for CVE-2026-124194, which lists the fixed versions.

Do this now: Federal remediation deadline 2026-11-24; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated November 10, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Senserva AI Opinion for CVE-2026-124194

This is a spoofing flaw in Microsoft Outlook that CISA added to its Known Exploited Vulnerabilities catalog on 2026-11-10, so attackers are already using it despite a Medium Severity rating (CVSS 6.5). The listed exposure is Microsoft Office LTSC 2021 (32-bit and 64-bit) and Office LTSC 2024 64-bit, which are the volume-licensed builds many organizations keep on fixed-version channels. The score understates the risk here: confirmed exploitation moves this above other Medium items, though no ransomware use is currently reported.

Do this: Identify all Office LTSC 2021 and LTSC 2024 installs, apply Microsoft's security update for CVE-2026-124194 to them today, and prioritize any systems that handle external mail.

AI-generated from public data, 2026-11-11. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2026-124194

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

I run IT security. Facts for CVE-2026-124194, an actively exploited vulnerability (source: https://senserva.com/cve/CVE-2026-124194.html, data from CISA KEV, FIRST.org EPSS, NVD, refreshed daily (early morning US Central)):
- CVE-2026-124194: Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability
- Affected: Microsoft Office
- Severity: Medium, CVSS v3 6.5
- Added to CISA KEV: 2026-11-10; federal remediation due 2026-11-24
- Ransomware-linked: no
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) The fastest safe path to remediation. 4) How to check whether my environment is exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Full tracking and change history for CVE-2026-124194

Published: 2026-11-10
Last revised: 2026-11-10
Changes tracked: 1

Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.

Senserva Watchevery change we have recorded for this one

What changed, and when

CISA confirmed active exploitation of CVE-2026-124194 on 2026-11-10.

2026-11-10 added to the CISA KEV catalog by CISA
2026-11-11 EPSS first scored at 0.0%

Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.

What the press says about CVE-2026-124194

Trusted-source coverage, pulled live from their own feeds.

“Microsoft Confirms Hackers Are Exploiting Outlook 0-Day to Steal Windows Authentication Hashes” Cyber Security News, 2026-11-11

“Patch Tuesday - November 2026” Rapid7, 2026-11-10

“Microsoft’s November 2026 Patch Tuesday addresses 1093 CVEs (CVE-2026-124194)” Tenable, 2026-11-10

“The November 2026 Security Update Review” Zero Day Initiative, 2026-11-10

CISA required action

Federal remediation due date: 2026-11-24.

Official fix for CVE-2026-124194

The authoritative fix and affected-version list are published by the vendor. Find the Office advisory on Microsoft Security Update Guide (MSRC).

Microsoft Security Update Guide (MSRC)CISA KEV entry

Common questions about CVE-2026-124194

Is CVE-2026-124194 actively exploited?

Yes. CVE-2026-124194 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2026-11-10, which means exploitation in the wild has been confirmed, not predicted.

What is the CISA deadline and required action for CVE-2026-124194?

CISA set the federal remediation due date at 2026-11-24.

What fixes CVE-2026-124194?

The authoritative fix is in the vendor advisory: see Microsoft Security Update Guide (MSRC) for the patched Office versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.

Can I ask my own AI about CVE-2026-124194?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2026-124194's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed daily (early morning US Central).

Scope and sources

More exploited Microsoft CVEs: CVE-2019-1068 CVE-2008-4250 CVE-2009-1537 CVE-2010-0249 CVE-2010-0806 CVE-2026-41091 CVE-2026-45498 CVE-2026-33825
All Microsoft exploited CVEs on one page: Microsoft vulnerabilities actively exploited.
Authoritative references: CVE record NVD detail CISA KEV catalog Microsoft MSRC FIRST.org EPSS

Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.