CVE-2026-4565

HIGH

Tenda AC21 SetNetControlList formSetQosBand buffer overflow

Title source: cna
STIX 2.1

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.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-352402 | Tenda AC21 SetNetControlList formSetQosBand buffer overflow
https://vuldb.com/?id.352402
Signature, Permissions Required signature permissions-required
VDB-352402 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/?ctiid.352402
Third Party Advisory third-party-advisory
Submit #775119 | Tenda AC21 Tenda AC21 V1.0 V16.03.08.16 Buffer Overflow
https://vuldb.com/?submit.775119
Product product
https://www.tenda.com.cn/

Scores

CVSS v3 8.8
EPSS 0.0094
EPSS Percentile 56.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-119 CWE-120
Status published
Products (2)
Tenda/AC21 16.03.08.16
tenda/ac21_firmware 16.03.08.16
Published Mar 23, 2026
Tracked Since Mar 23, 2026