CVE-2026-3678: high-severity vulnerability in Tenda FH451
Tenda FH451 AdvSetWan sub_3C434 stack-based overflow
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.6%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
Tenda · FH451Related CVEs — Tenda FH451
In the same product, most dangerous first.
CVE-2026-2911HIGHTenda FH451 GstDhcpSetSer buffer overflowEPSS 3.5%CVE-2025-7795HIGHTenda FH451 P2pListFilter fromP2pListFilter stack-based overflowEPSS 3.4%CVE-2025-7855HIGHTenda FH451 qossetting fromqossetting stack-based overflowEPSS 1.3%CVE-2025-7794HIGHTenda FH451 NatStaticSetting fromNatStaticSetting stack-based overflowEPSS 1.3%CVE-2025-7793HIGHTenda FH451 webtypelibrary formWebTypeLibrary stack-based overflowEPSS 1.3%CVE-2025-7792HIGHTenda FH451 SafeEmailFilter formSafeEmailFilter stack-based overflowEPSS 1.3%