CVE-2021-31756: Buffer Overflow
First published: Fri May 07 2021(Updated: )
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /gofrom/setwanType allows attackers to execute arbitrary code on the system via a crafted post request. This occurs when input vector controlled by malicious attack get copied to the stack variable.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Tenda AC11 Firmware | <=02.03.01.104_cn | |
| Tenda AC11 Router |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-31756?
CVE-2021-31756 is considered to be a high severity vulnerability due to its potential to allow arbitrary code execution.
How do I fix CVE-2021-31756?
To fix CVE-2021-31756, upgrade the Tenda AC11 firmware to a version above 02.03.01.104_CN.
What is the nature of CVE-2021-31756?
CVE-2021-31756 is a stack buffer overflow vulnerability found in the /gofrom/setwanType endpoint.
Who is affected by CVE-2021-31756?
Devices running Tenda AC11 firmware version 02.03.01.104_CN and below are affected by CVE-2021-31756.
Can CVE-2021-31756 be exploited remotely?
Yes, CVE-2021-31756 can be exploited remotely by sending a crafted post request to the vulnerable device.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/references
- agent/weakness
- agent/severity
- agent/author
- agent/event
- agent/description
- agent/first-publish-date
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/tenda
- canonical/tenda ac11 firmware
- version/tenda ac11 firmware/02.03.01.104_cn
- canonical/tenda ac11 router