Windows TCP/IP Remote Code Execution Vulnerability
Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.
MSRC compact vulnerability detail
CVE-2026-40415 · Windows TCP/IP Remote Code Execution Vulnerability
Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.
Signals
Windows TCP/IP
Remote Code Execution
Exploited: No
Publicly disclosed: No
Exploitability: Exploitation Unlikely
CWE
Patch Diff
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Resolved binary override
Use this when the MSRC module name cannot be mapped automatically or the resolved binary looks wrong.
Description
Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.
FAQ / Articles
FAQ
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation requires the target system to be under sustained low-memory (memory pressure) conditions, which are not commonly present in normal operation. This makes the vulnerability difficult to reliably trigger, as the attacker must first induce or wait for a constrained memory state before exploitation becomes possible.
FAQ
How could an attacker exploit this vulnerability? An attacker could exploit this vulnerability by sending specially crafted malicious traffic to a vulnerable server.