CVE-2026-3809 Details
Description
A flaw has been found in Tenda FH1202 1.2.0.14(408). The impacted element is the function fromNatStaticSetting of the file /goform/NatSaticSetting. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been published and may be used.
A stack-based buffer overflow vulnerability has been identified in the Tenda FH1202 router, specifically in version 1.2.0.14(408). The issue arises in the 'fromNatStaticSetting' function within the '/goform/NatSaticSetting' file. The vulnerability is triggered by manipulating the 'page' parameter, which is passed to the 'sprintf' function without proper length validation. This oversight allows for a buffer overflow on the stack, potentially leading to a denial-of-service condition or arbitrary code execution. The vulnerability can be exploited remotely, and a proof-of-concept exploit is publicly available.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 10, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-fh1202-natsaticsetting-page-buffer-overflow | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.349775 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.349775 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.769039 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda fh1202 firmware | 1.2.0.14(408) |
CPE
Remediation
| |
| tenda fh1202 | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 9, 2026 | Initial Analysis | [email protected] |
| Mar 9, 2026 | New CVE Received | [email protected] |