Home

Description

A vulnerability was identified in Tenda AC21 16.03.08.16. The affected element is the function fromAdvSetMacMtuWan of the file /goform/AdvSetMacMtuWan. The manipulation leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.

PUBLISHED Reserved 2026-01-29 | Published 2026-01-29 | Updated 2026-01-29 | 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

16.03.08.16
affected

Timeline

2026-01-29:Advisory disclosed
2026-01-29:VulDB entry created
2026-01-29:VulDB entry last update

Credits

LX-LX (VulDB User) reporter

References

vuldb.com/?id.343416 (VDB-343416 | Tenda AC21 AdvSetMacMtuWan fromAdvSetMacMtuWan stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.343416 (VDB-343416 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.740865 (Submit #740865 | Tenda AC21 V16.03.08.16 Buffer Overflow) third-party-advisory

github.com/LX-LX88/cve/issues/25 exploit issue-tracking

www.tenda.com.cn/ product

cve.org (CVE-2026-1637)

nvd.nist.gov (CVE-2026-1637)

Download JSON