---
id: CVE-2025-8299
title: >-
  Realtek rtl81xx SDK Wi-Fi Driver MgntActSet_TEREDO_SET_RS_PACKET Heap-based
  Buffer Overflow Local Privilege Escalation Vulnerability
summary: >-
  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 r…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-122
vendor: realtek
product: wi-fi_usb_driver
affected:
  - wi-fi_usb_driver < 1030.52.0325.2025
patched:
  - wi-fi_usb_driver 1030.52.0325.2025
published: '2025-09-02'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-8299'
references:
  - url: 'https://www.zerodayinitiative.com/advisories/ZDI-25-882/'
    label: zdi-disclosures@trendmicro.com
tags:
  - nvd
epss: 0.00152
epssPercentile: 0.03743
zeroDay: true
ingestedAt: '2026-09-30T23:29:32.354Z'
---

## Overview

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.

## Affected

- `wi-fi_usb_driver < 1030.52.0325.2025`

## Remediation

Upgrade past the affected range:

- `wi-fi_usb_driver 1030.52.0325.2025`