Heap-Based Buffer Overflow Vulnerability in Realtek RTL81XX SDK Wi-Fi Driver

CVE-2025-8300

What is CVE-2025-8300?

The Realtek RTL81XX SDK Wi-Fi Driver is susceptible to a heap-based buffer overflow vulnerability that enables local attackers to escalate privileges. The flaw is located in the N6CSet_DOT11_CIPHER_DEFAULT_KEY function, where user-supplied data is not properly validated before being copied into a fixed-length heap buffer. This lack of validation allows an attacker with low-privileged access to exploit the vulnerability, potentially executing arbitrary code with elevated SYSTEM privileges. Mitigating this vulnerability is crucial to ensuring the security and integrity of affected systems.

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