CVE-2026-4565 Details
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.
A buffer overflow vulnerability has been identified in the Tenda AC21 router running version 16.03.08.16. The issue arises in the SetNetControlList file, specifically within the formSetQosBand function. The vulnerability can be exploited remotely by manipulating the argument list, leading to a buffer overflow condition. This flaw is critical as it could potentially allow for remote code execution.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/hellonestor/killallbug/issues/14 | [email protected] | ExploitIssue Tracking |
| https://github.com/hellonestor/killallbug/releases/tag/poc | [email protected] | Exploit |
| https://vuldb.com/?ctiid.352402 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.352402 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.775119 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda ac21 firmware | 16.03.08.16 |
CPE
Remediation
| |
| tenda ac21 | 1.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 3, 2026 | Initial Analysis | [email protected] |
| Mar 23, 2026 | New CVE Received | [email protected] |