CVE-2022-30198 in Windows
Summary
by MITRE • 10/11/2022
Windows Point-to-Point Tunneling Protocol Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-22035, CVE-2022-24504, CVE-2022-33634, CVE-2022-38000, CVE-2022-38047, CVE-2022-41081.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 05/29/2026
The Windows Point-to-Point Tunneling Protocol Remote Code Execution Vulnerability represents a critical security flaw in Microsoft Windows operating systems that affects the Point-to-Point Tunneling Protocol implementation. This vulnerability specifically targets the PPTP protocol which is used for creating virtual private networks and establishing secure connections between remote clients and corporate networks. The flaw exists within the way Windows handles certain PPTP control messages and authentication sequences, creating an opportunity for attackers to execute arbitrary code on affected systems with the privileges of the target process. This vulnerability is particularly concerning as it can be exploited remotely without requiring authentication, making it a prime target for automated attacks and lateral movement within compromised networks.
The technical implementation of this vulnerability stems from improper input validation and memory handling within the Windows PPTP service components. Attackers can craft specially crafted PPTP packets that trigger buffer overflows or other memory corruption issues when processed by the vulnerable Windows kernel components. This type of flaw aligns with CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow vulnerabilities. The vulnerability operates at the kernel level within the Windows networking stack, specifically affecting the pptp.sys driver and related kernel-mode components that handle PPTP protocol negotiations. The exploitation process typically involves sending malformed PPTP control messages that cause the system to allocate insufficient memory for processing the data, leading to memory corruption that can be leveraged to execute malicious code.
The operational impact of CVE-2022-30198 extends beyond simple remote code execution, as it provides attackers with persistent access to compromised systems and facilitates further network infiltration. Organizations with active PPTP implementations face significant risk exposure since PPTP is still widely deployed in legacy environments despite being considered deprecated due to known security weaknesses. The vulnerability can be exploited to establish persistent backdoors, escalate privileges, and move laterally across network segments where PPTP is used for remote access. This aligns with ATT&CK technique T1071.004 which covers protocol tunneling, and T1059.001 which covers command and scripting interpreter usage. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, Windows Server 2019, and Windows Server 2022, though the specific impact varies based on system configuration and network deployment.
Organizations should implement immediate mitigations to address this vulnerability including disabling PPTP services where possible, applying Microsoft security patches, and monitoring network traffic for suspicious PPTP activity. The recommended approach involves disabling PPTP protocol support through group policy settings or registry modifications, as well as implementing network segmentation to limit exposure. Security teams should also monitor for exploitation attempts through network intrusion detection systems and review firewall logs for unusual PPTP traffic patterns. According to Microsoft security advisory guidance, organizations should prioritize patching affected systems and consider implementing additional security controls such as network access control lists and endpoint detection and response solutions. The vulnerability demonstrates the ongoing risks associated with legacy protocols and the importance of maintaining up-to-date security configurations, particularly in environments where deprecated technologies continue to be utilized for remote access connectivity.