A vulnerability was detected in Tenda AC21 16.03.08.16. Impacted is the function formSetQosBand of the file /goform/SetNetControlList. Performing a manipulation of the argument list results in buffer overflow. The attack can be initiated remotely. The exploit is now public and may be used.

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History

Mon, 23 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 23 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Tenda ac21
Vendors & Products Tenda ac21

Mon, 23 Mar 2026 01:45:00 +0000

Type Values Removed Values Added
Description A vulnerability was detected in Tenda AC21 16.03.08.16. Impacted is the function formSetQosBand of the file /goform/SetNetControlList. Performing a manipulation of the argument list results in buffer overflow. The attack can be initiated remotely. The exploit is now public and may be used.
Title Tenda AC21 SetNetControlList formSetQosBand buffer overflow
First Time appeared Tenda
Tenda ac21 Firmware
Weaknesses CWE-119
CWE-120
CPEs cpe:2.3:o:tenda:ac21_firmware:*:*:*:*:*:*:*:*
Vendors & Products Tenda
Tenda ac21 Firmware
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-03-23T16:39:11.312Z

Reserved: 2026-03-22T08:29:00.489Z

Link: CVE-2026-4565

cve-icon Vulnrichment

Updated: 2026-03-23T16:15:27.517Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-23T01:16:43.803

Modified: 2026-03-23T14:31:37.267

Link: CVE-2026-4565

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-23T09:45:44Z

Weaknesses