CVE-2025-8940

Public Exploit
Tenda AC20 saveParentControlInfo strcpy buffer overflow

Description

A vulnerability was identified in Tenda AC20 up to 16.03.08.12. Affected by this vulnerability is the function strcpy of the file /goform/saveParentControlInfo. The manipulation of the argument Time leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Category

7.4
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Third-Party Advisory vuldb.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory vuldb.com
Affected: Tenda AC20
Published at:
Updated at:

References

Link Tags
https://vuldb.com/?id.319903 third party advisory technical description vdb entry
https://vuldb.com/?ctiid.319903 permissions required signature vdb entry
https://vuldb.com/?submit.631836 third party advisory vdb entry
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md exploit third party advisory related
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md#poc exploit third party advisory
https://www.tenda.com.cn/ product

Frequently Asked Questions

What is the severity of CVE-2025-8940?
CVE-2025-8940 has been scored as a high severity vulnerability.
How to fix CVE-2025-8940?
To fix CVE-2025-8940, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-8940 being actively exploited in the wild?
It is possible that CVE-2025-8940 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-8940?
CVE-2025-8940 affects Tenda AC20.
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