What is CVE-2026-11503?

CVE-2026-11503 is a high-severity vulnerability in Tenda Cx12l, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-06-08.

How severe is CVE-2026-11503?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Tenda Cx12l

CVE-2026-11503

A security vulnerability has been detected in Tenda CX12L 16.03.53.12. The affected element is the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set of the component Wi-Fi Configuration Endpoint. Such manipulati…

Vulnerability class: Buffer Overflow

EPSS: 0.005 (37.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda Cx12l — versions 16.03.53.12

Weakness classification (CWE)

References

cna@vuldb.com (issue-tracking, exploit)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-11503?: CVE-2026-11503 is a high-severity vulnerability in Tenda Cx12l, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-06-08.
How severe is CVE-2026-11503?: High severity. CVSS v3 base score is 8.8 out of 10.