CVE-2025-8300— Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability
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I. Basic Information for CVE-2025-8300
Vulnerability Information
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Vulnerability Title
Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Realtek rtl81xx SDK Wi-Fi driver. 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-26552.
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 rtl81xx SDK Wi-Fi Driver 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Realtek rtl81xx SDK Wi-Fi Driver是中国瑞昱半导体（Realtek）公司的一款网卡驱动软件。 Realtek rtl81xx SDK Wi-Fi Driver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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Realtek | rtl81xx SDK | 1030.38.712.2019 | - |
II. Public POCs for CVE-2025-8300
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|---|
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Same Patch Batch · Realtek · 2025-09-02 · 5 CVEs total
| 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-2025-8301 | Realtek RTL8811AU rtwlanu.sys N6CSet_DOT11_CIPHER_DEFAULT_KEY Heap-based Buffer Overflow L | |
| CVE-2025-8299 | Realtek rtl81xx SDK Wi-Fi Driver MgntActSet_TEREDO_SET_RS_PACKET Heap-based Buffer Overflo |
IV. Related Vulnerabilities
Same vendor: Realtek
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RTK IIS Codec Service 6.4.10041.133 - 'RtkI2SCodec' Unquote - CVE-2020-36974
Realtek Andrea RT Filters 1.0.64.7 - 'AERTSr64.EXE' Unquoted - CVE-2025-8299
Realtek rtl81xx SDK Wi-Fi Driver MgntActSet_TEREDO_SET_RS_PA - CVE-2025-8298
Realtek RTL8811AU rtwlanu.sys N6CQueryInformationHandleCusto - CVE-2025-8301
Realtek RTL8811AU rtwlanu.sys N6CSet_DOT11_CIPHER_DEFAULT_KE
Same weakness: CWE-122
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