CVE-2026-69431: Telnet Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Telnet Client allows an unauthorized attacker to execute code over a network.
Other sources
Telnet Client Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Event History
Frequently Asked Questions
Which Windows platforms are identified as affected?
The affected software list includes Microsoft Windows 10, Windows 11, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025.
Does exploitation require authentication or user interaction?
No. The supplied CVSS vector identifies network attack access with low attack complexity, no privileges required, and no user interaction required.
What could successful exploitation allow?
The vulnerability is described as allowing an unauthorized attacker to execute code over a network. Its CVSS vector rates confidentiality, integrity, and availability impacts as high.
Is an official remediation indicated?
Yes. The supplied CVSS vector includes remediation level RL:O, which indicates an official fix. The provided data does not include specific update, KB, or build details.