TI-2021-20509 Aliases CVE-2021-45392 GHSA-5r8w-456g-rjc8

A Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the…

MEDIUM 47CWE-787Published 2022-02-14 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · 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 Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in page /goform/setIPv6Status via the prefixDelegate parameter, which causes a Denial of Service.

Why it matters now

EPSS 0.12294 96th 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:tenda:ax12_firmware:22.03.01.21_cn:::::::*	22.03.01.21_cn	Vulnerable	Tenda
cpe:2.3:h:tenda:ax12:-:::::::*	not specified by NVD	Running on	Tenda

cpe:2.3:o:tenda:ax12_firmware:22.03.01.21_cn:*:*:*:*:*:*:* Versions 22.03.01.21_cn Vulnerable ·Tenda
cpe:2.3:h:tenda:ax12:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-45392
2026-10-03 Alias added: GHSA-5r8w-456g-rjc8

References

Exploit 1

https://github.com/sec-bin/IoT-CVE/tree/main/Tenda/AX12/2

Advisory 2

Other 1

http://tendawifi.com/index.html

TI-2023-27009 Tenda AX12 V22.03.01.46 has been discovered to contain a command injection vulnerability… CVSS 3.1CRITICAL 9.8
TI-2023-27000 Tenda AX12 V22.03.01.46 has been discovered to contain a command injection vulnerability… CVSS 3.1CRITICAL 9.8
TI-2023-26996 Tenda AX12 V22.03.01.46 was discovered to contain a stack overflow via the list parameter… CVSS 3.1CRITICAL 9.8
TI-2022-22733 Tenda AX12 V22.03.01.21_CN was found to have a command injection vulnerability via /goform/setMacFilterCfg function. CVSS 3.1HIGH 8.8
TI-2022-22141 Tenda AX12 V22.03.01.16_cn is vulnerable to command injection via goform/fast_setting_internet_set. CVSS 3.1HIGH 8.8
TI-2025-21014 Tenda AX12 v22.03.01.46_CN was discovered to contain a stack overflow via the sub_42F69C… CVSS 3.1HIGH 7.5

See all 30 →

Sources

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