Heap-based Buffer Overflow Vulnerability in Realtek rtl81xx SDK Wi-Fi Driver
CVE-2025-8299

8.8HIGH

Key Information:

Vendor

Realtek

Status
Rtl81xx Sdk
Vendor
CVE Published:
2 September 2025

What is CVE-2025-8299?

A vulnerability has been identified within the MgntActSet_TEREDO_SET_RS_PACKET function of the Realtek rtl81xx SDK Wi-Fi driver, which could allow local attackers to escalate their privileges on affected systems. This issue stems from inadequate validation of user-supplied data lengths before they are copied into a fixed-length heap-based buffer. If successfully exploited, this vulnerability enables an attacker to execute arbitrary code with elevated SYSTEM privileges, posing significant security risks to the integrity of the affected installations.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

rtl81xx SDK 1030.38.712.2019

References

https://www.zerodayinitiative.com/advisories/ZDI-25-882/
x_research-advisory

CVSS V3.0

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.