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CVE-2026-3678

HIGH CVSS 4.0: 7.4 EPSS 0.09%
Updated Mar 07, 2026
Parameter Value
CVSS 7.4 (HIGH)
Type CWE-119 (Buffer Overflow), CWE-121 (Stack-based Buffer Overflow)
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0