High 8.8Published Mar 7, 2026

CVE-2026-3678Tenda FH451 AdvSetWan sub_3C434 stack-based overflow

Updated under an hour ago (Oct 27, 2026, 4:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Tenda FH451

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Weakness (CWE): CWE-121, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: Mar 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Tenda FH451 tenda:fh451_firmware	1.0.0.9	CNA record
tenda fh451_firmware tenda:fh451_firmware	1.0.0.9	NVD

References

References

https://vuldb.com/?id.349580	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.349580	signature, permissions-required, vdb-entry
https://vuldb.com/?submit.765330	third-party-advisory, vdb-entry
https://github.com/Litengzheng/vul_db/blob/main/FH451/vul_62/README.md	exploit, issue-tracking
https://www.tenda.com.cn/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.