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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 – < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 – < 16.0.14334.21048 | 16.0.14334.21048 |
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0 – < 16.0.17932.21140 | 16.0.17932.21140 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
-
AmesianX/CVE-2026-124194-poc ★ 8 · Nov 11, 2026
CVE-2026-124194 PoC - Outlook spoofing/forced-authentication NTLM leak (patched 2026-11). Concept proof only, untested against vulnerable Outlook.
-
Ghost-Bx1/cve-2026-124194-outlook-ntlm-hash-leak ★ 2 · Nov 11, 2026
CVE-2026-124194 - Outlook NTLM Hash Leak (CVSS 6.5)
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- WID-SEC-2026-4479 Microsoft Office: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026
- MSRC-CVE-2026-124194 Microsoft Outlook Spoofing Vulnerability Microsoft Security Response Center · Nov 10, 2026
References
- Microsoft Outlook Spoofing Vulnerability vendor-advisory patch