- Description
- 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-26552.
- Source
- zdi-disclosures@trendmicro.com
- NVD status
- Analyzed
- Products
- wi-fi_usb_driver
CVSS 3.0
- Type
- Secondary
- Base score
- 8.8
- Impact score
- 6
- Exploitability score
- 2
- Vector string
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Severity
- HIGH
- zdi-disclosures@trendmicro.com
- CWE-122
- Hype score
- Not currently trending
[ZDI-25-883|CVE-2025-8300] Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability (CVSS 8.8; Credit: dungnm from vcslab of Viettel Cyber Security) https://t.co/iX4mTNTuhB
@TheZDIBugs
17 Sept 2025
490 Impressions
0 Retweets
3 Likes
1 Bookmark
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Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability (CVE-2025-8300) #CVE20258300 #CyberSecurity #LocalPrivilegeEscalation #Realtek https://t.co/gdu3hIe05E https://t.co/tMKaLiNv5B
@SystemTek_UK
6 Sept 2025
39 Impressions
0 Retweets
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[CVE-2025-8300: HIGH] Vulnerability in Realtek rtl81xx SDK Wi-Fi Driver permits local attackers privilege escalation. Flaw in N6CSet_DOT11_CIPHER_DEFAULT_KEY function enables code execution as SYSTEM user.#cve,CVE-2025-8300,#cybersecurity https://t.co/RY1hzBxlA4 https://t.co/cnf6
@CveFindCom
5 Sept 2025
127 Impressions
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CVE-2025-8300 Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate priv… https://t.co/kubFzDZ6z5
@CVEnew
2 Sept 2025
172 Impressions
0 Retweets
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