What’s Vulnerable › Vulnerabilities

CVE-2025-7421: Tenda O3V2 httpd operateMacFilter fromMacFilterModify stack-based overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-07-11 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability was found in Tenda O3V2 1.0.0.12(3880). It has been rated as critical. This issue affects the function fromMacFilterModify of the file /goform/operateMacFilter of the component httpd. The manipulation of the argument mac leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Tenda O3 Firmware: 1.0.0.12(3880)

References

• https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_54/54.md
• https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_54/54.md#poc
• https://vuldb.com/?ctiid.315881
• https://vuldb.com/?id.315881
• https://vuldb.com/?submit.608867
• https://www.tenda.com.cn/
• https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_54/54.md

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