What’s Vulnerable › Vulnerabilities

CVE-2025-9088: Tenda AC20 formSetVirtualSer save_virtualser_data stack-based overflow

• Severity: critical (CVSS 9.8 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: 2025-08-16 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability was found in Tenda AC20 16.03.08.12. This vulnerability affects the function save_virtualser_data of the file /goform/formSetVirtualSer. The manipulation of the argument list leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Tenda AC20: 16.03.08.12

References

• https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer
• https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer#poc-python-exploit-script
• https://vuldb.com/?ctiid.320356
• https://vuldb.com/?id.320356
• https://vuldb.com/?submit.632038
• https://www.tenda.com.cn/

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