TI-2021-21140 Aliases CVE-2021-46264 GHSA-x9vm-53x5-5vvm

Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer…

MEDIUM 46CWE-787Published 2022-02-15 · Updated 2024-08-04

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-787 and the CVSS impact.

Summary

Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer overflow in the onlineList module. This vulnerability allows attackers to cause a Denial of Service (DoS) via crafted overflow data.

Why it matters now

EPSS 0.01734 77th 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:ac11_firmware:02.03.01.104_cn:::::::*	02.03.01.104_cn	Vulnerable	Tenda
cpe:2.3:h:tenda:ac11:-:::::::*	not specified by NVD	Running on	Tenda

cpe:2.3:o:tenda:ac11_firmware:02.03.01.104_cn:*:*:*:*:*:*:* Versions 02.03.01.104_cn Vulnerable ·Tenda
cpe:2.3:h:tenda:ac11:-:*:*:*:*:*:*:* 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-2021-46264
2026-10-03 Alias added: GHSA-x9vm-53x5-5vvm

References

Exploit 1

https://github.com/Ainevsia/CVE-Request/tree/main/Tenda/9

TI-2021-11772 An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. KEVCVSS 3.1CRITICAL 9.8
TI-2021-11775 An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. CVSS 3.1CRITICAL 9.8
TI-2021-11774 An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. CVSS 3.1CRITICAL 9.8
TI-2021-11773 An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. CVSS 3.1CRITICAL 9.8
TI-2021-21157 Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer… CVSS 3.1CRITICAL 9.8
TI-2021-21141 Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer… CVSS 3.1CRITICAL 9.8

See all 8 →

Sources

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