CVE-2025-8301— Realtek RTL8811AU rtwlanu.sys N6CSet_DOT11_CIPHER_DEFAULT_KEY Heap-based Buffer Overflow Local Privilege Escalation Vulnerability
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I. Basic Information for CVE-2025-8301
Vulnerability Information
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Vulnerability Title
Realtek RTL8811AU rtwlanu.sys N6CSet_DOT11_CIPHER_DEFAULT_KEY Heap-based Buffer Overflow Local Privilege Escalation Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Realtek RTL8811AU rtwlanu.sys N6CSet_DOT11_CIPHER_DEFAULT_KEY Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Realtek RTL8811AU drivers. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-24786.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Realtek RTL8811AU 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Realtek RTL8811AU是中国瑞昱半导体（Realtek）公司的一款控制器芯片。 Realtek RTL8811AU存在安全漏洞，该漏洞源于N6CSet_DOT11_CIPHER_DEFAULT_KEY函数验证不足，可能导致本地权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-8301
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Same Patch Batch · Realtek · 2025-09-02 · 5 CVEs total
| CVE-2025-8300 | Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escala | |
| CVE-2025-8302 | Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escala | |
| CVE-2025-8298 | Realtek RTL8811AU rtwlanu.sys N6CQueryInformationHandleCustomized11nOids Out-Of-Bounds Rea | |
| CVE-2025-8299 | Realtek rtl81xx SDK Wi-Fi Driver MgntActSet_TEREDO_SET_RS_PACKET Heap-based Buffer Overflo |
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Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer O - CVE-2025-8299
Realtek rtl81xx SDK Wi-Fi Driver MgntActSet_TEREDO_SET_RS_PA - CVE-2025-8298
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Same weakness: CWE-122
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V. Comments for CVE-2025-8301
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