Tenda FH451 POST Request addressNat fromAddressNat stack-based overflow
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
A vulnerability was found in Tenda FH451 up to 1.0.0.9 and classified as critical. Affected by this issue is the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. The manipulation of the argument page leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Tenda | FH451 | 1.0.0.0; 1.0.0.1; 1.0.0.2; 1.0.0.3; 1.0.0.4; 1.0.0.5; 1.0.0.6; 1.0.0.7; 1.0.0.8; 1.0.0.9 | — | No fix listed | CNA |
- FH451 VendorTenda Affected 1.0.0.0; 1.0.0.1; 1.0.0.2; 1.0.0.3; 1.0.0.4; 1.0.0.5; 1.0.0.6; 1.0.0.7; 1.0.0.8; 1.0.0.9 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-7434
- 2026-10-03 Alias added: GHSA-pm7f-pvmf-hhwh
References
More Tenda Fh451 Firmware vulnerabilities
- TI-2024-30872 Tenda FH451 v1.0.0.9 has a command injection vulnerability in the formexeCommand function i CVSS 3.1CRITICAL 9.8
- TI-2024-30870 Tenda FH451 v1.0.0.9 has a stack overflow vulnerability located in the RouteStatic function. CVSS 3.1CRITICAL 9.8
- TI-2026-03940 Tenda FH451 WrlclientSet stack-based overflow CVSS 4.0HIGH 8.7
- TI-2026-03939 Tenda FH451 WrlExtraSet formWrlExtraSet stack-based overflow CVSS 4.0HIGH 8.7
- TI-2026-03173 Tenda FH451 AdvSetWan sub_3C434 stack-based overflow CVSS 4.0HIGH 8.7
- TI-2026-03172 Tenda FH451 setcfm fromSetCfm stack-based overflow CVSS 4.0HIGH 8.7
Sources
- CVE-2025-7434 · CVE Program
- CVE-2025-7434 · NVD
- FIRST EPSS
- GHSA-pm7f-pvmf-hhwh · GitHub Advisory Database · CC BY 4.0
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