CVE-2021-45392
HIGHCVSS 7.5/10EPSS 12.29%
Last modified
CVE-2021-45392 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in page /goform/setIPv6Status via the prefixDelegate parameter, which causes a Denial of Service.. EPSS estimates a 12.29% chance of exploitation in the next 30 days.
Description
A Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in page /goform/setIPv6Status via the prefixDelegate parameter, which causes a Denial of Service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tenda | Ax12 Firmware | 22.03.01.21_cn |
References
- http://tendawifi.com/index.htmlBroken Link
- https://github.com/sec-bin/IoT-CVE/tree/main/Tenda/AX12/2Exploit, Third Party Advisory
- https://www.tenda.com.cn/Vendor Advisory
- https://www.tenda.com.cn/product/AX12.htmlProduct, Vendor Advisory
- http://tendawifi.com/index.htmlBroken Link
- https://github.com/sec-bin/IoT-CVE/tree/main/Tenda/AX12/2Exploit, Third Party Advisory
- https://www.tenda.com.cn/Vendor Advisory
- https://www.tenda.com.cn/product/AX12.htmlProduct, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-45392?
A Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in page /goform/setIPv6Status via the prefixDelegate parameter, which causes a Denial of Service.
How severe is CVE-2021-45392?
CVE-2021-45392 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 12.29% probability of exploitation in the next 30 days.
How do I fix CVE-2021-45392?
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-2021-45392?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST