[HIGH] CVE-2026-3808 — CVSS 8.8 (March 9, 2026)

A HIGH-severity vulnerability identified as CVE-2026-3808 has been published on March 9, 2026 with a CVSS base score of 8.8. The vulnerability affects Tenda Fh1202 firmware. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.

Vulnerability Details

CVE ID: CVE-2026-3808
Severity: HIGH
CVSS Score: 8.8
Published: March 9, 2026
Affected Product: Tenda Fh1202 firmware
Weakness (CWE): CWE-119

Technical Description

A vulnerability was detected in Tenda FH1202 1.2.0.14(408). The affected element is the function formWebTypeLibrary of the file /goform/webtypelibrary. Performing a manipulation of the argument webSiteId results in stack-based buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.

Potential Impact

If exploited, this high-severity vulnerability could allow an attacker to compromise sensitive data confidentiality, tamper with system integrity, cause a denial of service. Organizations running Tenda Fh1202 firmware should treat this as a priority remediation item.

Recommended Action

No official patch is available yet. Until one is released:

1. Monitor the official NVD page and vendor channels for patch announcements.
2. Restrict access to the affected system or service where possible.
3. Apply network-level mitigations such as firewall rules or WAF policies.
4. Enable logging and alerting for anomalous activity related to this vulnerability.
5. Review your incident response plan in case of active exploitation.

View full details on NVD →

References

• Exploit, Third Party Advisory
• Permissions Required, VDB Entry
• Third Party Advisory, VDB Entry
• Third Party Advisory, VDB Entry
• Product

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