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TI-2025-07598 Aliases CVE-2025-8302GHSA-h2h8-mq64-8jcm

Heap-based buffer overflow in Realtek rtl81xx SDK

Priority LOW 39CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

Realtek rtl81xx SDK Wi-Fi Driver rtwlanu 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 N6CSet_DOT11_CIPHER_DEFAULT_KEY 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-26553.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00152 4th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Realtekrtl81xx SDK1030.38.712.2019—No fix listedCNA
  • rtl81xx SDK VendorRealtek Affected 1030.38.712.2019 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:realtek:wi-fi_usb_driver:*:*:*:*:*:windows:*:*before 1030.52.0325.2025VulnerableRealtek
cpe:2.3:h:realtek:rtl8811au:-:*:*:*:*:*:*:*not specified by NVDRunning onRealtek
  • cpe:2.3:a:realtek:wi-fi_usb_driver:*:*:*:*:*:windows:*:* Versions before 1030.52.0325.2025 Vulnerable ·Realtek
  • cpe:2.3:h:realtek:rtl8811au:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Realtek

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-8302
  2. 2026-10-03 Alias added: GHSA-h2h8-mq64-8jcm

References

Advisory 1

  • TI-2025-07596 Heap-based buffer overflow in Realtek rtl81xx SDK CVSS 3.0HIGH 8.8
  • TI-2025-07595 Heap-based buffer overflow in Realtek rtl81xx SDK CVSS 3.0HIGH 8.8
  • TI-2025-07597 Heap-based buffer overflow in Realtek RTL8811AU CVSS 3.0HIGH 7.8
  • TI-2025-07594 Out-of-bounds read in Realtek RTL8811AU CVSS 3.0LOW 3.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences