CVE-2026-3678 - Vulnerability Analysis

Overview

Tenda FH451 1.0.0.9 contains a stack-based buffer overflow caused by manipulation of the wanmode/PPPOEPassword argument in /goform/AdvSetWan, letting remote attackers execute arbitrary code, exploit requires crafted request.

Severity & Score

Impact

Remote attackers can execute arbitrary code, potentially leading to full system compromise.

Mitigation

Update to the latest version.

References

• https://vuldb.com/?ctiid.349580
• https://vuldb.com/?id.349580
• https://vuldb.com/?submit.765330
• https://www.tenda.com.cn/
• https://github.com/Litengzheng/vul_db/blob/main/FH451/vul_62/README.md

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Mar 8, 2026

🟠 CVE-2026-3678 - High (8.8) 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 att... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-3678/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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