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Description

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.

PUBLISHED Reserved 2026-02-20 | Published 2026-02-21 | Updated 2026-02-22 | Assigner VulDB




HIGH: 8.7CVSS: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
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

1.0.0.0
affected

Timeline

2026-02-20:Advisory disclosed
2026-02-20:VulDB entry created
2026-02-20:VulDB entry last update

Credits

hhsw34 (VulDB User) reporter

References

vuldb.com/?id.347108 (VDB-347108 | Tenda A21 SetIpMacBind fromSetIpMacBind stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.347108 (VDB-347108 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.754631 (Submit #754631 | Tenda A21 V1.0.0.0 Stack-based Buffer Overflow) third-party-advisory

vuldb.com/?submit.754630 (Submit #754630 | Tenda A21 V1.0.0.0 stack (Duplicate)) third-party-advisory

github.com/QIU-DIE/cve-nneeww/issues/2 exploit issue-tracking

www.tenda.com.cn/ product

cve.org (CVE-2026-2871)

nvd.nist.gov (CVE-2026-2871)

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