CVE-2021-42659: Buffer Overflow
First published: Tue May 24 2022(Updated: )
There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Tenda Ac9 Firmware | =15.03.05.19\(6318\) | |
| Tenda AC9 | =1.0 | |
| Tenda Ac9 Firmware | =15.03.06.42_multi | |
| Tenda AC9 | =3.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-42659?
CVE-2021-42659 is a buffer overflow vulnerability in the Web server httpd of Tenda router devices.
Which Tenda router devices are affected by CVE-2021-42659?
Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi are affected by CVE-2021-42659.
What is the impact of CVE-2021-42659?
The httpd program crashes and exits when a super-long list parameter occurs during the virtual service setting, exposing the vulnerability.
What is the severity of CVE-2021-42659?
CVE-2021-42659 has a severity rating of medium.
How can I fix the CVE-2021-42659 vulnerability?
Update the firmware of your Tenda router device to the latest version provided by the vendor.
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- version/tenda ac9 firmware/15.03.05.19\(6318\)
- canonical/tenda ac9
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- version/tenda ac9/3.0