Tenda CH22 L7Im frmL7ImForm buffer 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 security flaw has been discovered in Tenda CH22 1.0.0.1. This affects the function frmL7ImForm of the file /goform/L7Im. Performing a manipulation of the argument page results in buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.
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 | CH22 | 1.0.0.1 | — | No fix listed | CNA |
- CH22 VendorTenda Affected 1.0.0.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-14526
- 2026-10-03 Alias added: GHSA-rh6w-m6gv-w9ff
References
More Tenda Ch22 Firmware vulnerabilities
- TI-2025-10464 Tenda CH22 SafeEmailFilter formSafeEmailFilter memory corruption CVSS 4.0CRITICAL 9.3
- TI-2025-10459 Tenda CH22 HTTP Request AdvSetWrlsafeset formWrlsafeset stack-based overflow CVSS 4.0CRITICAL 9.3
- TI-2024-30869 Tenda CH22 V1.0.0.6(468) has a stack overflow vulnerability located in the frmL7PlotForm function. CVSS 3.1CRITICAL 9.8
- TI-2024-30868 CH22 V1.0.0.6(468) has a stack overflow vulnerability located in the fromqossetting function. CVSS 3.1CRITICAL 9.8
- TI-2026-04913 Tenda CH22 WrlExtraSet formWrlExtraSet stack-based overflow CVSS 4.0HIGH 8.7
- TI-2026-04912 Tenda CH22 Parameter CertLocalPrecreate formCertLocalPrecreate stack-based overflow CVSS 4.0HIGH 8.7
Sources
- CVE-2025-14526 · CVE Program
- CVE-2025-14526 · NVD
- FIRST EPSS
- GHSA-rh6w-m6gv-w9ff · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences