CVE-2026-1637
HIGHTenda AC21 16.03.08.16 - Stack-Based Buffer Overflow in fromAdvSetMacMtuWan Function
Title source: llmDescription
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.
References (5)
Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.343416
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.343416
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.740865
Broken Link broken-link
exploit
issue-tracking
https://github.com/LX-LX88/cve/issues/25
Product product
https://www.tenda.com.cn/
Scores
CVSS v3
8.8
EPSS
0.0004
EPSS Percentile
11.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
CWE-121
Status
published
Products (1)
tenda/ac21_firmware
16.03.08.16
Published
Jan 29, 2026
Tracked Since
Feb 18, 2026