PT-2025-35607 · Realtek · Realtek Rtl81Xx Sdk Wi-Fi Driver

Dungnm · Published 2025-09-02 · Updated 2025-09-17 · CVE-2025-8299

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Realtek rtl81xx SDK Wi-Fi Driver (affected versions not specified)

Description This issue 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 to exploit this flaw. The vulnerability exists within the MgntActSet TEREDO SET RS PACKET function due to insufficient validation of user-supplied data length before copying it into a fixed-length heap-based buffer, potentially leading to arbitrary code execution in the context of SYSTEM.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2025-8299

ZDI-25-882

Affected Products

Realtek Rtl81Xx Sdk Wi-Fi Driver

References · 7

• https://osv.dev/vulnerability/CVE-2025-8299 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-8299 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-25-882 · Security Note
• https://twitter.com/TheZDIBugs/status/1968368223226572875 · Twitter Post
• https://twitter.com/CVEnew/status/1962976542104916033 · Twitter Post
• https://twitter.com/CveFindCom/status/1963980090590601429 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1962990652213416221 · Twitter Post