High severity8.8NVD Advisory· Published Jan 29, 2026· Updated Jun 17, 2026
CVE-2026-1637
CVE-2026-1637
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:o:tenda:ac21_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:tenda:ac21_firmware:*:*:*:*:*:*:*:*range: 16.03.08.16
- cpe:2.3:o:tenda:ac21_firmware:16.03.08.16:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
5- vuldb.comnvdThird Party AdvisoryVDB Entry
- vuldb.comnvdThird Party AdvisoryVDB Entry
- github.com/LX-LX88/cve/issues/25nvdBroken Link
- vuldb.comnvdPermissions RequiredVDB Entry
- www.tenda.com.cnnvdProduct
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