CVE-2026-3678

HIGH

Tenda FH451 1.0.0.9 - Buffer Overflow

Title source: llm
STIX 2.1

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.

References (5)

Core 5
Core References
Permissions Required, VDB Entry vdb-entry technical-description
https://vuldb.com/?id.349580
Permissions Required, VDB Entry signature permissions-required
https://vuldb.com/?ctiid.349580
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.765330
Various Sources product
https://www.tenda.com.cn/

Scores

CVSS v3 8.8
EPSS 0.0056
EPSS Percentile 42.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-119 CWE-121
Status published
Products (1)
tenda/fh451_firmware 1.0.0.9
Published Mar 07, 2026
Tracked Since Mar 08, 2026