Description
Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows Server 2012 | 6.2.9200.0 – < 6.2.9200.26280 | 6.2.9200.26280 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – < 6.2.9200.26280 | 6.2.9200.26280 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – < 6.3.9600.23338 | 6.3.9600.23338 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – < 6.3.9600.23338 | 6.3.9600.23338 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.9418 | 10.0.14393.9418 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.9418 | 10.0.14393.9418 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.9121 | 10.0.17763.9121 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.9121 | 10.0.17763.9121 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.5499 | 10.0.20348.5499 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.33296 | 10.0.26100.33296 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.33296 | 10.0.26100.33296 |
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
-
nmlz/CVE-2026-62878 ★ 1 · Sep 24, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- WID-SEC-2026-2756 Microsoft Windows Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 30, 2026
- MSRC-CVE-2026-62878 Windows DNS Server Remote Code Execution Vulnerability Microsoft Security Response Center · Sep 8, 2026
- NCSC-2026-0284 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Aug 11, 2026
References
- Windows DNS Server Remote Code Execution Vulnerability vendor-advisory patch