CVE-2026-1637 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Ac21
Severity
7.4HIGHNVD
EPSS
0.0%
top 88.85%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 29
Latest updateJan 30
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.
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N