CVE-2026-104611 Tenda AC9 - Buffer Overflow

Tenda AC9 15.03.02.13 contains a stack-based buffer overflow caused by manipulation of the "netWanType" argument in /goform/fast_setting_internet_set POST request handler, letting remote attackers cause denial of service or execute code, exploit requires crafted request.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.49% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Remote Code Execution, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published
2 October 2026
Updated
15 October 2026
Weakness
CWE-119

Vendor fix

Update to the latest version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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