ZDI-25-882: Realtek rtl81xx SDK Wi-Fi Driver MgntActSet_TEREDO_SET_RS_PACKET 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 MgntActSetTEREDOSETRSPACKET 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.
Other sources
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 ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2025-8299.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-25-882?
The severity of ZDI-25-882 is critical due to its potential for local privilege escalation.
How do I fix ZDI-25-882?
To fix ZDI-25-882, users should update the Realtek rtl81xx SDK Wi-Fi driver to the latest version.
Who is affected by ZDI-25-882?
ZDI-25-882 affects installations of the Realtek rtl81xx SDK Wi-Fi driver.
What type of attack does ZDI-25-882 enable?
ZDI-25-882 enables local attackers to escalate privileges on affected systems.
Is remote exploitation possible with ZDI-25-882?
No, ZDI-25-882 requires local access for exploitation after executing low-privileged code.