What’s Vulnerable › Vulnerabilities

CVE-2025-8940: Tenda AC20 saveParentControlInfo strcpy buffer overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-08-14 · updated 2026-06-17
• Weakness: CWE-119

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.

Affected products

• Tenda AC20: from 16.03.08.0 through 16.03.08.12

References

• https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md
• https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md#poc
• https://vuldb.com/?ctiid.319903
• https://vuldb.com/?id.319903
• https://vuldb.com/?submit.631836
• https://www.tenda.com.cn/
• https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md

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