CVE-2025-8299 Details
Description
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 MgntActSet_TEREDO_SET_RS_PACKET 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-25857.
A heap-based buffer overflow vulnerability has been identified in the Realtek rtl81xx SDK Wi-Fi driver, specifically within the MgntActSet_TEREDO_SET_RS_PACKET function. This vulnerability allows local attackers to escalate privileges on affected systems. The issue arises from inadequate validation of user-supplied data length before it is copied to a fixed-length heap-based buffer. Exploitation of this vulnerability could enable an attacker to execute arbitrary code with SYSTEM privileges.
Users can upgrade to version 1030.44.1204.2024 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 3, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-25-882/ | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| realtek wi-fi usb driver | < 1030.52.0325.2025 |
CPE
Remediation
| |
| realtek rtl8811au | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Sep 10, 2025 | Initial Analysis | [email protected] |
| Sep 2, 2025 | New CVE Received | [email protected] |