Description
Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Skype for Business Server 2015 CU13 | 9319.0 – < 6.0.9319.886 | 6.0.9319.886 |
| Microsoft | Skype for Business Server 2019 CU8 | 2046.0 – < 7.0.2046.583 | 7.0.2046.583 |
| Microsoft | Skype for Business Server Subscription Edition CU1 | 2046.0 – < 7.0.2046.889 | 7.0.2046.889 |
Advisories 3
- WID-SEC-2026-3916 Microsoft Office Produkte: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Oct 15, 2026
- NCSC-2026-0422 Kwetsbaarheden verholpen in Microsoft Office NCSC-NL (Netherlands) · Oct 13, 2026
- MSRC-CVE-2026-85873 Skype for Business Elevation of Privilege Vulnerability Microsoft Security Response Center · Oct 13, 2026
References
- Skype for Business Elevation of Privilege Vulnerability vendor-advisory patch