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HIGH

CVE-2025-3820

CVSS v3

8.8

HIGH

EPSS Score

11.8 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

A vulnerability was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644) and classified as critical. Affected by this issue is the function cgiSysUplinkCheckSet of the file /bin/httpd. The manipulation of the argument hostIp1/hostIp2 leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Technical details

Published
2025-04-19

Frequently asked questions

What is CVE-2025-3820?

A vulnerability was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644) and classified as critical. Affected by this issue is the function cgiSysUplinkCheckSet of the file /bin/httpd. The manipulation of the argument hostIp1/hostIp2 leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Is CVE-2025-3820 actively exploited?

Active exploitation of CVE-2025-3820 has not been confirmed. Its EPSS score was 11.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-3820?

CVE-2025-3820 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2025-3820 affecting your environment?

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