What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-07 · updated 2026-06-17
• Weakness: CWE-119

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.

Affected products

• Tenda FH451: 1.0.0.9

References

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

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