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.
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-26434 | 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. |
| Link | Providers |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-25-879/ |
|
Wed, 10 Sep 2025 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Realtek rtl8811au
Realtek wi-fi Usb Driver |
|
| CPEs | cpe:2.3:a:realtek:wi-fi_usb_driver:*:*:*:*:*:windows:*:* cpe:2.3:h:realtek:rtl8811au:-:*:*:*:*:*:*:* |
|
| Vendors & Products |
Realtek rtl8811au
Realtek wi-fi Usb Driver |
Wed, 03 Sep 2025 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Realtek
Realtek realtek Sdk |
|
| Vendors & Products |
Realtek
Realtek realtek Sdk |
Wed, 03 Sep 2025 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 02 Sep 2025 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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-26553. | |
| Title | Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability | |
| Weaknesses | CWE-122 | |
| References |
| |
| Metrics |
cvssV3_0
|
Status: PUBLISHED
Assigner: zdi
Published:
Updated: 2025-09-03T15:29:59.332Z
Reserved: 2025-07-28T23:20:00.535Z
Link: CVE-2025-8302
Updated: 2025-09-03T15:29:55.562Z
Status : Analyzed
Published: 2025-09-02T20:15:39.197
Modified: 2025-09-10T15:00:15.943
Link: CVE-2025-8302
No data.
OpenCVE Enrichment
Updated: 2025-09-03T20:27:10Z
EUVD