Microsoft Outlook Spoofing Vulnerability
Summary
| CVE | CVE-2026-124194 |
|---|---|
| State | PUBLISHED |
| Assigner | microsoft |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-11-10 19:20:48 UTC |
| Updated | 2026-11-10 21:29:50 UTC |
| Description | Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network. |
Risk And Classification
Primary CVSS: v3.1 6.5 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA KEV: Listed on 2026-11-10; due 2026-11-24; ransomware use Unknown
Problem Types: CWE-356 | CWE-356 CWE-356: Product UI does not Warn User of Unsafe Actions
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| 3.1 | CNA | CVSS | 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 |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
RequiredScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA Known Exploited Vulnerability
| Vendor | Microsoft |
|---|---|
| Product | Office |
| Name | Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability |
| 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. |
| Notes | https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-124194 ; https://nvd.nist.gov/vuln/detail/CVE-2026-124194 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Microsoft | 365 Apps | - | All | All | All |
| Application | Microsoft | 365 Apps | - | All | All | All |
| Application | Microsoft | Office 2021 | - | All | All | All |
| Application | Microsoft | Office 2021 | - | All | All | All |
| Application | Microsoft | Office 2024 | - | All | All | All |
| Application | Microsoft | Office 2024 | - | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Microsoft | Microsoft 365 Apps For Enterprise | affected 16.0.1 https://aka.ms/OfficeSecurityReleases custom | 32-bit Systems, x64-based Systems |
| CNA | Microsoft | Microsoft Office LTSC 2021 | affected 16.0.1 16.0.14334.21048 custom | 32-bit Systems, x64-based Systems |
| CNA | Microsoft | Microsoft Office LTSC 2024 | affected 16.0.0 16.0.17932.21140 custom | 32-bit Systems, x64-based Systems |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124194 | [email protected] | msrc.microsoft.com | Vendor Advisory |
| www.cisa.gov/known-exploited-vulnerabilities-catalog | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.cisa.gov | US Government Resource |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-11-10T00:00:00.000Z | CVE-2026-124194 added to CISA KEV |
There are currently no legacy QID mappings associated with this CVE.