CVE-2022-21742
MEDIUMCVSS 6.5/10EPSS 0.24%
Last modified
CVE-2022-21742 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Realtek USB driver has a buffer overflow vulnerability due to insufficient parameter length verification in the API function. An unauthenticated LAN attacker can exploit this vulnerability to disrupt services.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
Realtek USB driver has a buffer overflow vulnerability due to insufficient parameter length verification in the API function. An unauthenticated LAN attacker can exploit this vulnerability to disrupt services.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Realtek | Rtl8156 Firmware | >= 7.42, <= 7.53 |
| Realtek | Rtl8156 Firmware | >= 8.49, <= 8.60 |
| Realtek | Rtl8156 Firmware | >= 10.28, < 10.50 |
| Realtek | Rtl8156b Firmware | >= 7.42, <= 7.53 |
| Realtek | Rtl8156b Firmware | >= 8.49, <= 8.60 |
| Realtek | Rtl8156b Firmware | >= 10.28, < 10.50 |
| Realtek | Rtl8153 Firmware | >= 7.42, <= 7.53 |
| Realtek | Rtl8153 Firmware | >= 8.49, <= 8.60 |
| Realtek | Rtl8153 Firmware | >= 10.28, < 10.50 |
| Realtek | Rtl8153b Firmware | >= 7.42, <= 7.53 |
| Realtek | Rtl8153b Firmware | >= 8.49, <= 8.60 |
| Realtek | Rtl8153b Firmware | >= 10.28, < 10.50 |
| Realtek | Rtl8154 Firmware | >= 7.42, <= 7.53 |
| Realtek | Rtl8154 Firmware | >= 8.49, <= 8.60 |
| Realtek | Rtl8154 Firmware | >= 10.28, < 10.50 |
| Realtek | Rtl8154b Firmware | >= 7.42, <= 7.53 |
| Realtek | Rtl8154b Firmware | >= 8.49, <= 8.60 |
| Realtek | Rtl8154b Firmware | >= 10.28, < 10.50 |
| Realtek | Rtl8152b Firmware | >= 7.42, <= 7.53 |
| Realtek | Rtl8152b Firmware | >= 8.49, <= 8.60 |
| Realtek | Rtl8152b Firmware | >= 10.28, < 10.50 |
References
- https://www.twcert.org.tw/tw/cp-132-6057-1cd0d-1.htmlThird Party Advisory
- https://www.twcert.org.tw/tw/cp-132-6057-1cd0d-1.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-21742?
Realtek USB driver has a buffer overflow vulnerability due to insufficient parameter length verification in the API function. An unauthenticated LAN attacker can exploit this vulnerability to disrupt services.
How severe is CVE-2022-21742?
CVE-2022-21742 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2022-21742?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2022-21742?
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Scan your code nowSource: NVD / NIST