CVE-2026-4565

HIGH 8.8

Tenda AC21 SetNetControlList formSetQosBand buffer overflow

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-120 CWE-119
Vendor	tenda
Product	ac21
Published	Mar 23, 2026
Last Updated	Mar 23, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Tenda / AC21

16.03.08.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.352402 vuldb.com: https://vuldb.com/?ctiid.352402 vuldb.com: https://vuldb.com/?submit.775119 github.com: https://github.com/hellonestor/killallbug/issues/14 github.com: https://github.com/hellonestor/killallbug/releases/tag/poc tenda.com.cn: https://www.tenda.com.cn/

Credits

🔍 junqi (VulDB User)