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.
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https://www.zerodayinitiative.com/advisories/ZDI-25-879/ |
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History
Wed, 03 Sep 2025 20:30:00 +0000
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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 | |
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cvssV3_0
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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

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

Status : Awaiting Analysis
Published: 2025-09-02T20:15:39.197
Modified: 2025-09-04T15:36:56.447
Link: CVE-2025-8302

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