Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-8300— Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability

Quick assessment

Affected
Realtek rtl81xx SDK
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

AI Predicted 7.8 Difficulty: Easy EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-8300

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
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

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-8300

请登录查看更多情报信息。

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 product: rtl81xx SDK
Same vendor: Realtek
Same weakness: CWE-122

V. Comments for CVE-2025-8300

No comments yet

Leave a comment