PT-2026-23887 · Tenda · Tenda Fh451

Ltzhuster · Published 2026-02-16 · Updated 2026-03-12 · CVE-2026-3678

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Tenda FH451 version 1.0.0.9

Description A stack-based buffer overflow exists in the function sub 3C434 of the file /goform/AdvSetWan. Manipulation of the wanmode/PPPOEPassword argument can trigger this issue. The attack can be initiated remotely and has been publicly disclosed.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the /goform/AdvSetWan file. Avoid using the wanmode/PPPOEPassword argument until the issue is resolved.

Exploit

Fix

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

BDU:2026-06156

CVE-2026-3678

Affected Products

Tenda Fh451

References · 14

• 🔥 https://github.com/Litengzheng/vul_db/blob/main/FH451/vul_62/README.md · Exploit
• https://bdu.fstec.ru/vul/2026-06156 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-3678 · Security Note
• https://osv.dev/vulnerability/CVE-2026-3678 · Vendor Advisory
• https://github.com/Litengzheng/vul_db/commits/main/FH451/vul_62/README.md · Note
• https://t.me/CVEtracker/46761 · Telegram Post
• https://twitter.com/CveFindCom/status/2030429010044256306 · Twitter Post
• https://twitter.com/CVEnew/status/2030747901174186466 · Twitter Post
• https://vuldb.com/?ctiid.349580 · Note
• https://tenda.com.cn · Note
• https://vuldb.com/?id.349580 · Note
• https://vuldb.com/?submit.765330 · Note
• https://t.me/cveNotify/154629 · Telegram Post
• https://twitter.com/cracbot/status/2032049057859027224 · Twitter Post