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CVE-2025-26686

HighPublished

Windows TCP/IP Remote Code Execution Vulnerability

Published: Apr 8, 2025
Updated: Aug 10, 2026
Assigning CNA: microsoft
Evidence observed: Aug 8, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

1.5%

Low · next 30 days

Percentile: 72.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Sensitive data storage in improperly locked memory in Windows TCP/IP allows an unauthorized attacker to execute code over a network.

Sources

CVE-2025-26686-The-TCP-IP-Flaw-That-Opens-the-GatesExploit
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 compromise. Patch now
CVE-2025-26686-poc-A-critical-RCE-vulnerability-in-Windows-TCP-IP-stackPoC
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 network, it risks full compromise. Patch now

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