SB2025090315 - Multiple vulnerabilities in Realtek rtl81xx SDK Wi-Fi Driver

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Heap-based buffer overflow (CVE-ID: CVE-2025-8302)

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system with elevated privileges.

2) Heap-based buffer overflow (CVE-ID: CVE-2025-8300)

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system with elevated privileges.

3) Heap-based buffer overflow (CVE-ID: CVE-2025-8299)

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the MgntActSet_TEREDO_SET_RS_PACKET function. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system with elevated privleges.

Remediation

Install update from vendor's website.

References

• https://www.zerodayinitiative.com/advisories/ZDI-25-879/
• https://www.zerodayinitiative.com/advisories/ZDI-25-883/
• https://www.zerodayinitiative.com/advisories/ZDI-25-882/