Skip to main content
HIGH

CVE-2026-3678

CVSS v3

8.8

HIGH

EPSS Score

1.0 %

exploit probability, as of 2026-10-04

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

A vulnerability was determined in Tenda FH451 1.0.0.9. Affected is the function sub_3C434 of the file /goform/AdvSetWan. This manipulation of the argument wanmode/PPPOEPassword causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

Technical details

Published
2026-03-07
Last Modified
2026-03-09

Frequently asked questions

What is CVE-2026-3678?

A vulnerability was determined in Tenda FH451 1.0.0.9. Affected is the function sub_3C434 of the file /goform/AdvSetWan. This manipulation of the argument wanmode/PPPOEPassword causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

Is CVE-2026-3678 actively exploited?

Active exploitation of CVE-2026-3678 has not been confirmed. Its EPSS score was 1.0% on 2026-10-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-3678?

CVE-2026-3678 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2026-3678 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

Check an IPSearch CVEsSIEM & TIP integrations

No credit card required · 50 free checks/month · Free API key

Other 2026 vulnerabilities worth triaging

Ranked by exploit probability (EPSS).

Back to CVE Database