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.
History

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

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


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

{'score': 8.8, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: zdi

Published: 2025-09-02T20:02:20.806Z

Updated: 2025-09-03T15:29:59.332Z

Reserved: 2025-07-28T23:20:00.535Z

Link: CVE-2025-8302

cve-icon Vulnrichment

Updated: 2025-09-03T15:29:55.562Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-02T20:15:39.197

Modified: 2025-09-04T15:36:56.447

Link: CVE-2025-8302

cve-icon Redhat

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