{"id":87115,"date":"2026-06-13T19:01:15","date_gmt":"2026-06-13T19:01:15","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-29838-critical-privilege-escalation-vulnerability-in-windows-drivers","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-29838-critical-privilege-escalation-vulnerability-in-windows-drivers\/","title":{"rendered":"CVE-2025-29838: Critical Privilege Escalation Vulnerability in Windows Drivers<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This report analyzes the critical vulnerability CVE-2025-29838, a null pointer dereference in Windows Drivers that allows unauthorized attackers to escalate their privileges locally. This vulnerability has a far-reaching impact, affecting numerous Windows users globally and poses a serious threat to organizations due to its high severity score and potential for system compromise or data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-29838
\nSeverity: High – CVSS Score: 7.4
\nAttack Vector: Local
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Unauthorized privilege escalation leading to potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Windows Operating System | All current versions<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit works by taking advantage of a null pointer dereference in certain Windows drivers. In a successful attack scenario, an unauthorized attacker could trigger the null pointer dereference, causing the system to crash or, more critically, allowing the attacker to execute arbitrary code with elevated permissions on the system. This privilege escalation could lead to full system compromise, including data leakage and unauthorized control of the affected system.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

The following is a conceptual example of how the vulnerability might be exploited:<\/p>\n

using System;\nusing System.Diagnostics;\nnamespace CVE_2025_29838\n{\nclass Program\n{\nstatic void Main(string[] args)\n{\n\/\/ Obtain a handle to the vulnerable driver\nIntPtr hDevice = CreateFile(\"\\\\\\\\.\\\\VulnerableDriver\", GENERIC_READ | GENERIC_WRITE, 0, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero);\n\/\/ Malicious buffer causes null pointer dereference\nbyte[] inputBuffer = new byte[1];\ninputBuffer[0] = 0x00; \/\/ Null byte\nuint bytesReturned;\nDeviceIoControl(hDevice, 0x222003, inputBuffer, (uint)inputBuffer.Length, IntPtr.Zero, 0, out bytesReturned, IntPtr.Zero);\n}\n}\n}<\/code><\/pre>\n
Note that this is a conceptual example and the actual exploitation may vary based on the specific vulnerable driver and system configuration. The above example is intended to illustrate the general principle of the exploit rather than provide a working exploit.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users are recommended to apply the vendor patch as soon as it is available. Until the patch is deployed, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may serve as a temporary mitigation measure, but it may not fully protect against all possible exploit scenarios.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report analyzes the critical vulnerability CVE-2025-29838, a null pointer dereference in Windows Drivers that allows unauthorized attackers to escalate their privileges locally. This vulnerability has a far-reaching impact, affecting numerous Windows users globally and poses a serious threat to organizations due to its high severity score and potential for system compromise or data […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-87115","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t