Tenda AC9 POST Request WizardHandle decodePwd 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 AC9 15.03.02.13. The affected element is the function decodePwd of the file /goform/WizardHandle of the component POST Request Handler. Performing a manipulation of the argument WANS results in stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made public and could 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 | AC9 | 15.03.02.13 | — | No fix listed | CNA |
- AC9 VendorTenda Affected 15.03.02.13 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-6016
- 2026-10-03 Alias added: GHSA-wqhq-hx3v-9xwh
References
More Tenda Ac9 Firmware vulnerabilities
- TI-2018-10434 An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7)… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-28777 In the Tenda ac9 v1.0 router with firmware V15.03.05.14_multi, there is a stack overflow… CVSS 3.1CRITICAL 9.8
- TI-2025-28776 In Tenda ac9 v1.0 with firmware V15.03.05.14_multi, the rebootTime parameter of… CVSS 3.1CRITICAL 9.8
- TI-2025-28775 In Tenda AC9 v1.0 with firmware V15.03.05.14_multi, the security parameter of… CVSS 3.1CRITICAL 9.8
- TI-2025-28726 Tenda AC9 v15.03.05.14 was discovered to contain a command injection vulnerability via the Telnet function. CVSS 3.1CRITICAL 9.8
- TI-2025-28675 Tenda AC9 V15.03.06.42_multi was found to contain a command injection vulnerability in… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-6016 · CVE Program
- CVE-2026-6016 · NVD
- FIRST EPSS
- GHSA-wqhq-hx3v-9xwh · 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