TI-2020-13926 Aliases CVE-2020-20746 GHSA-hxxx-7hr3-hpmx

A stack-based buffer overflow in the httpd server on Tenda AC9 V15.03.06.60_EN allows…

LOW 37CWE-787Published 2021-09-30 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: High
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-787 and the CVSS impact.

Summary

A stack-based buffer overflow in the httpd server on Tenda AC9 V15.03.06.60_EN allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via a crafted POST request to /goform/SetStaticRouteCfg.

Why it matters now

EPSS 0.02901 87th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged 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 · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:tendacn:ac9_firmware:15.03.06.60_en:::::::*	15.03.06.60_en	Vulnerable	Tendacn
cpe:2.3:h:tendacn:ac9:3.0:::::::*	3.0	Running on	Tendacn

cpe:2.3:o:tendacn:ac9_firmware:15.03.06.60_en:*:*:*:*:*:*:* Versions 15.03.06.60_en 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-2020-20746
2026-10-03 Alias added: GHSA-hxxx-7hr3-hpmx

References

Exploit 1

https://github.com/grapefruitvul/vulinfo/blob/master/tenda/vul1.md

Other 1

https://cwe.mitre.org/data/definitions/121.html

TI-2023-21622 Tenda AC9 V3.0BR_V15.03.06.42_multi_TD01 was discovered stack overflow via parameter… CVSS 3.1CRITICAL 9.8
TI-2025-20964 Tenda AC9 v15.03.05.19(6318) was discovered to contain a buffer overflow via the formWifiWpsOOB function. CVSS 3.1MEDIUM 5.9
TI-2020-14266 Stack-based buffer overflow in Tenda AC-10U AC1200 Router… CVSS 3.1CRITICAL 9.8
TI-2020-10504 An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01, AC9 V1.0… CVSS 3.1CRITICAL 9.8
TI-2020-10505 An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01, AC9 V1.0… CVSS 3.1CRITICAL 9.8
TI-2020-10503 An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01, AC9 V1.0… CVSS 3.1CRITICAL 9.8

See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences