ZDI-CAN-25857: 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-CAN-25857?
The severity of ZDI-CAN-25857 is classified as high due to the potential for local privilege escalation.
How do I fix ZDI-CAN-25857?
To fix ZDI-CAN-25857, ensure that you apply the latest updates or patches from Realtek for the rtl81xx SDK.
Who is affected by ZDI-CAN-25857?
ZDI-CAN-25857 affects installations of the Realtek rtl81xx SDK Wi-Fi driver.
What type of vulnerability is ZDI-CAN-25857?
ZDI-CAN-25857 is a local privilege escalation vulnerability.
Can ZDI-CAN-25857 be exploited remotely?
No, ZDI-CAN-25857 cannot be exploited remotely as it requires local access to execute low-privileged code.