TI-2020-15267 Aliases CVE-2020-24987 GHSA-q9jc-x24x-r9x9

Tenda AC18 Router through V15.03.05.05_EN and through V15.03.05.19(6318) CN devices could…

MEDIUM 48CWE-287Published 2020-09-04 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
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-287.

Summary

Tenda AC18 Router through V15.03.05.05_EN and through V15.03.05.19(6318) CN devices could cause a remote code execution due to incorrect authentication handling of vulnerable logincheck() function in /usr/lib/lua/ngx_authserver/ngx_wdas.lua file if the administrator UI Interface is set to "radius".

Why it matters now

EPSS 0.03104 87th percentileScored 2026-11-07

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 · 3

CPE	Versions	Role	Vendor
cpe:2.3:o:tendacn:ac18_firmware::::::::	up to v15.03.05.05_en	Vulnerable	Tendacn
cpe:2.3:h:tendacn:ac18:-:::::::*	not specified by NVD	Running on	Tendacn
cpe:2.3:o:tendacn:ac18_firmware::::::::	up to v15.03.05.19\(6318\)_cn	Vulnerable	Tendacn

cpe:2.3:o:tendacn:ac18_firmware:*:*:*:*:*:*:*:* Versions up to v15.03.05.05_en Vulnerable ·Tendacn
cpe:2.3:h:tendacn:ac18:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tendacn
cpe:2.3:o:tendacn:ac18_firmware:*:*:*:*:*:*:*:* Versions up to v15.03.05.19\(6318\)_cn Vulnerable ·Tendacn

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-24987
2026-10-03 Alias added: GHSA-q9jc-x24x-r9x9

References

Advisory 2

Other 1

https://drive.google.com/file/d/1iqpr0EofOBC6kCq2USTOBPRlJu_naFjQ/view?usp=sharing

TI-2024-21960 Tenda AC18 V15.03.3.10_EN was discovered to contain a stack-based buffer overflow… CVSS 3.1CRITICAL 9.8
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-2024-21962 Tenda AC18 V15.03.3.10_EN was discovered to contain a stack-based buffer overflow… CVSS 3.1CRITICAL 9.8

See all 17 →

Sources

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