CVE-2026-2871

A weakness has been identified in Tenda A21 1.0.0.0. This affects the function fromSetIpMacBind of the file /goform/SetIpMacBind. This manipulation of the argument list causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.
References
Link Resource
https://github.com/QIU-DIE/cve-nneeww/issues/2 Exploit Issue Tracking Mitigation Third Party Advisory
https://vuldb.com/?ctiid.347108 Permissions Required VDB Entry
https://vuldb.com/?id.347108 Third Party Advisory VDB Entry
https://vuldb.com/?submit.754630 Third Party Advisory VDB Entry
https://vuldb.com/?submit.754631 VDB Entry Third Party Advisory
https://www.tenda.com.cn/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:tenda:a21_firmware:1.0.0.0:*:*:*:*:*:*:*
cpe:2.3:h:tenda:a21:-:*:*:*:*:*:*:*

History

23 Feb 2026, 20:59

Type Values Removed Values Added
CPE cpe:2.3:o:tenda:a21_firmware:1.0.0.0:*:*:*:*:*:*:*
cpe:2.3:h:tenda:a21:-:*:*:*:*:*:*:*
References () https://github.com/QIU-DIE/cve-nneeww/issues/2 - () https://github.com/QIU-DIE/cve-nneeww/issues/2 - Exploit, Issue Tracking, Mitigation, Third Party Advisory
References () https://vuldb.com/?ctiid.347108 - () https://vuldb.com/?ctiid.347108 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.347108 - () https://vuldb.com/?id.347108 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.754630 - () https://vuldb.com/?submit.754630 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.754631 - () https://vuldb.com/?submit.754631 - VDB Entry, Third Party Advisory
References () https://www.tenda.com.cn/ - () https://www.tenda.com.cn/ - Product
First Time Tenda a21
Tenda
Tenda a21 Firmware

21 Feb 2026, 16:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-02-21 16:16

Updated : 2026-02-23 20:59


NVD link : CVE-2026-2871

Mitre link : CVE-2026-2871

CVE.ORG link : CVE-2026-2871


JSON object : View

Products Affected

tenda

  • a21_firmware
  • a21
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow