CVEs / CVE-2026-124194
CVE-2026-124194: Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability
- Known exploited in the CISA KEV catalog since 10 Nov 2026
- medium 6.5 CVSS 3.1 (from the CNA)
- EPSS 1.62% chance of exploitation in the next 30 days, higher than 76% of CVEs (11 Nov 2026)
- Last changed at its sources
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Summary
Microsoft Office Outlook contains a missing user interaction for potentially unsafe action vulnerability that allows an unauthorized attacker to perform spoofing over a network.
Description
Product ui does not warn user of unsafe actions in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Microsoft 365 Apps for Enterprise | from 16.0.1, before https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft Microsoft Office LTSC 2021 | from 16.0.1, before 16.0.14334.21048 | 16.0.14334.21048 |
| Microsoft Microsoft Office LTSC 2024 | from 16.0.0, before 16.0.17932.21140 | 16.0.17932.21140 |
Exploitation
| In CISA KEV since | 10 Nov 2026 |
|---|---|
| Due date for US federal agencies | 24 Nov 2026 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-356 |
References
- CVE-2026-124194 on NVD
- CVE-2026-124194 in the CISA KEV catalog
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-124194 (cited by CISA)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124194 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-124194 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.