CVE-2026-124194 (GCVE-0-2026-124194)

Vulnerability from cvelistv5 – Published: 2026-11-10 18:22 – Updated: 2026-11-10 20:58
VLAI CISA
Title
Microsoft Outlook Spoofing Vulnerability
Summary
Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C
SSVC
Exploitation: active Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-10 19:50 UTC
CWE
  • CWE-356 - Product UI does not Warn User of Unsafe Actions
Assigner
microsoft CNA under the mitre root
CNA scorecard B 82/100 over 4930 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
guessed Create a notification for this product.
Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < 16.0.14334.21048 (custom)
guessed Create a notification for this product.
Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < 16.0.17932.21140 (custom)
guessed Create a notification for this product.
Date Public
2026-11-10 16:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e8b94de0-9686-4694-b3d8-33385f1819c3

Vulnerability ID: CVE-2026-124194

Status: Confirmed

Status Updated: 2026-11-10 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-11-10
Asserted: 2026-11-10
Scope
Notes: Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability | Affected: Microsoft / Office | Description: Microsoft Office Outlook contains a missing user interaction for potentially unsafe action vulnerability that allows an unauthorized attacker to perform spoofing over a network. | Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. | Due date: 2026-11-24 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-124194 ; https://nvd.nist.gov/vuln/detail/CVE-2026-124194
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-356
Feed CISA Known Exploited Vulnerabilities Catalog
Product Office
Due Date 2026-11-24
Date Added 2026-11-10
Vendorproject Microsoft
Vulnerabilityname Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-11-10 20:00 UTC | Updated: 2026-11-10 20:00 UTC
Show details on NVD website
To clipboard 

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