Description
Unintended proxy or intermediary ('confused deputy') in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.9681 | 10.0.14393.9681 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.9487 | 10.0.17763.9487 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.7846 | 10.0.19044.7846 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.7846 | 10.0.19045.7846 |
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 – < 10.0.22631.7711 | 10.0.22631.7711 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.9681 | 10.0.14393.9681 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.9681 | 10.0.14393.9681 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.9487 | 10.0.17763.9487 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.9487 | 10.0.17763.9487 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.5870 | 10.0.20348.5870 |
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 1 repository
-
crisprss/CVE-2026-88235 ★ 86 · Nov 2, 2026
One of the most powerful primitives for Windows default configuration LPE
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- WID-SEC-2026-4478 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026
- MSRC-CVE-2026-88235 Servicing Stack Updates Elevation of Privilege Vulnerability Microsoft Security Response Center · Nov 10, 2026
References
- Servicing Stack Updates Elevation of Privilege Vulnerability vendor-advisory patch