An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01, AC9 V1.0…
Priority MEDIUM 47CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01, AC9 V1.0 V15.03.05.19(6318)_CN, AC9 V3.0 V15.03.06.42_multi, AC15 V1.0 V15.03.05.19_multi_TD01, and AC18 V15.03.05.19(6318_)_CN devices. There is a buffer overflow vulnerability in the router's web server -- httpd. While processing the /goform/SetSpeedWan speed_dir parameter for a POST request, a value is directly used in a sprintf to a local variable placed on the stack, which overwrites the return address of a function. An attacker can construct a payload to carry out arbitrary code execution attacks.
Why it matters now
EPSS 0.02552 85th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:tendacn:ac6_firmware:v15.03.05.19_multi_td01:*:*:*:*:*:*:* | v15.03.05.19_multi_td01 | Vulnerable | Tendacn |
| cpe:2.3:h:tendacn:ac6:1.0:*:*:*:*:*:*:* | 1.0 | Running on | Tendacn |
| cpe:2.3:o:tendacn:ac9_firmware:v15.03.05.19\(6318\):*:*:*:*:*:*:* | v15.03.05.19(6318) | Vulnerable | Tendacn |
| cpe:2.3:h:tendacn:ac9:1.0:*:*:*:*:*:*:* | 1.0 | Running on | Tendacn |
| cpe:2.3:o:tendacn:ac15_firmware:v15.03.05.19_multi_td01:*:*:*:*:*:*:* | v15.03.05.19_multi_td01 | Vulnerable | Tendacn |
| cpe:2.3:h:tendacn:ac15:1.0:*:*:*:*:*:*:* | 1.0 | Running on | Tendacn |
| cpe:2.3:o:tendacn:ac18_firmware:v15.03.05.19\(6318\):*:*:*:*:*:*:* | v15.03.05.19(6318) | Vulnerable | Tendacn |
| cpe:2.3:h:tendacn:ac18:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Tendacn |
| cpe:2.3:o:tendacn:ac9_firmware:v15.03.06.42_multi:*:*:*:*:*:*:* | v15.03.06.42_multi | Vulnerable | Tendacn |
| cpe:2.3:h:tendacn:ac9:3.0:*:*:*:*:*:*:* | 3.0 | Running on | Tendacn |
- cpe:2.3:o:tendacn:ac6_firmware:v15.03.05.19_multi_td01:*:*:*:*:*:*:* Versions v15.03.05.19_multi_td01 Vulnerable ·Tendacn
- cpe:2.3:h:tendacn:ac6:1.0:*:*:*:*:*:*:* Versions 1.0 Running on ·Tendacn
- cpe:2.3:o:tendacn:ac9_firmware:v15.03.05.19\(6318\):*:*:*:*:*:*:* Versions v15.03.05.19(6318) Vulnerable ·Tendacn
- cpe:2.3:h:tendacn:ac9:1.0:*:*:*:*:*:*:* Versions 1.0 Running on ·Tendacn
- cpe:2.3:o:tendacn:ac15_firmware:v15.03.05.19_multi_td01:*:*:*:*:*:*:* Versions v15.03.05.19_multi_td01 Vulnerable ·Tendacn
- cpe:2.3:h:tendacn:ac15:1.0:*:*:*:*:*:*:* Versions 1.0 Running on ·Tendacn
- cpe:2.3:o:tendacn:ac18_firmware:v15.03.05.19\(6318\):*:*:*:*:*:*:* Versions v15.03.05.19(6318) Vulnerable ·Tendacn
- cpe:2.3:h:tendacn:ac18:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tendacn
- cpe:2.3:o:tendacn:ac9_firmware:v15.03.06.42_multi:*:*:*:*:*:*:* Versions v15.03.06.42_multi Vulnerable ·Tendacn
- cpe:2.3:h:tendacn:ac9:3.0:*:*:*:*:*:*:* Versions 3.0 Running on ·Tendacn
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-13391
- 2026-10-03 Alias added: GHSA-v393-hrm3-64jv
References
More Tendacn Ac15 Firmware vulnerabilities
- TI-2022-19452 Tenda AC15 and AC18 routers V15.03.05.19 contain stack overflow vulnerabilities in the… CVSS 3.1CRITICAL 9.8
- TI-2022-19448 Tenda AC15 and AC18 routers V15.03.05.19 contain heap overflow vulnerabilities in the… CVSS 3.1CRITICAL 9.8
- TI-2022-19447 Tenda AC15 and AC18 routers V15.03.05.19 contain stack overflow vulnerabilities in the… CVSS 3.1CRITICAL 9.8
- TI-2022-19446 Tenda AC15 and AC18 router V15.03.05.19 contains stack overflow vulnerability in the… CVSS 3.1CRITICAL 9.8
- TI-2022-19444 Tenda AC15 router V15.03.05.19 contains a stack overflow vulnerability in the function… CVSS 3.1CRITICAL 9.8
- TI-2022-19441 Tenda AC15 router V15.03.05.19 contains a stack overflow via the list parameter at /goform/fast_setting_wifi_set CVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-13391 · CVE Program
- CVE-2020-13391 · NVD
- FIRST EPSS
- GHSA-v393-hrm3-64jv · GitHub Advisory Database · CC BY 4.0
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