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-26553.
References
| Link | Resource |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-25-879/ | Third Party Advisory |
Configurations
Configuration 1 (hide)
| AND |
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History
10 Sep 2025, 15:00
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:realtek:wi-fi_usb_driver:*:*:*:*:*:windows:*:* cpe:2.3:h:realtek:rtl8811au:-:*:*:*:*:*:*:* |
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| First Time |
Realtek
Realtek wi-fi Usb Driver Realtek rtl8811au |
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| References | () https://www.zerodayinitiative.com/advisories/ZDI-25-879/ - Third Party Advisory |
02 Sep 2025, 20:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-09-02 20:15
Updated : 2025-09-10 15:00
NVD link : CVE-2025-8302
Mitre link : CVE-2025-8302
CVE.ORG link : CVE-2025-8302
JSON object : View
Products Affected
realtek
- rtl8811au
- wi-fi_usb_driver
CWE
CWE-122
Heap-based Buffer Overflow