Description
Sensitive data storage in improperly locked memory in Windows TCP/IP allows an unauthorized attacker to execute code over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 – < 10.0.10240.20978 | 10.0.10240.20978 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.7969 | 10.0.14393.7969 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.7136 | 10.0.17763.7136 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.5737 | 10.0.19044.5737 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.5737 | 10.0.19045.5737 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.5189 | 10.0.22621.5189 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – < 10.0.22631.5189 | 10.0.22631.5189 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.5189 | 10.0.22631.5189 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.3775 | 10.0.26100.3775 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.7601.0 – < 6.1.7601.27670 | 6.1.7601.27670 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.1.7601.0 – < 6.1.7601.27670 | 6.1.7601.27670 |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.6003.0 – < 6.0.6003.23220 | 6.0.6003.23220 |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.6003.0 – < 6.0.6003.23220 | 6.0.6003.23220 |
| Microsoft | Windows Server 2012 | 6.2.9200.0 – < 6.2.9200.25423 | 6.2.9200.25423 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – < 6.2.9200.25423 | 6.2.9200.25423 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – < 6.3.9600.22523 | 6.3.9600.22523 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – < 6.3.9600.22523 | 6.3.9600.22523 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.7969 | 10.0.14393.7969 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.7969 | 10.0.14393.7969 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.7136 | 10.0.17763.7136 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.7136 | 10.0.17763.7136 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.3453 | 10.0.20348.3453 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.1551 | 10.0.25398.1551 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.3775 | 10.0.26100.3775 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.3775 | 10.0.26100.3775 |
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.
GitHub 2 repositories
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mrk336/CVE-2025-26686-The-TCP-IP-Flaw-That-Opens-the-Gates ★ 33 · Sep 16, 2025
A critical RCE vulnerability in Windows TCP/IP stack (CVE-2025-26686) leaves sensitive memory unlocked, allowing remote attackers to hijack systems. Exploitable over the network, it risks full compro…
-
POC for CVE-2025-26686 - A critical RCE vulnerability in Windows TCP/IP stack (CVE-2025-26686) leaves sensitive memory unlocked, allowing remote attackers to hijack systems. Exploitable over the netw…
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- WID-SEC-2025-0744 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2025
- MSRC-CVE-2025-26686 Windows TCP/IP Remote Code Execution Vulnerability Microsoft Security Response Center · Apr 9, 2025
- NCSC-2025-0112 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Apr 8, 2025
References
- Windows TCP/IP Remote Code Execution Vulnerability vendor-advisory patch