What is CVE-2026-8138?

CVE-2026-8138 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 2026-05-08.

How severe is CVE-2026-8138?

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

Buffer overflow in Tenda Cx12l

CVE-2026-8138

A vulnerability was found in Tenda CX12L 16.03.53.12. This issue affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg”. The manipulation results in stack-based buffer overflow. The attack can be executed remotely. Th…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (23.5th 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
Tenda Cx12l_firmware — versions 16.03.53.12

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (issue-tracking, Exploit, Third Party Advisory, exploit, Issue Tracking)
cna@vuldb.com (Product, product)

Frequently asked questions

What is CVE-2026-8138?: CVE-2026-8138 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 2026-05-08.
How severe is CVE-2026-8138?: High severity. CVSS v3 base score is 8.8 out of 10.