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Vulnerability record · CVE-2026-5685 · published 6 April 2026

CVE-2026-5685: Tenda cx12l firmware memory buffer overflow vulnerability

Tenda · Cx12l Firmware

A vulnerability was identified in Tenda CX12L 16.03.53.12. This affects the function fromAddressNat of the file /goform/addressNat. The manipulation of the argument page leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might be used.

7.4 CVSS 4.0 High EPSS 0.99% · top 39.1% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
7.4CVSS 4.0 base score, v2 9.0
0.99%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
24 Jul 2026Last modified by NVD

Description

A vulnerability was identified in Tenda CX12L 16.03.53.12. This affects the function fromAddressNat of the file /goform/addressNat. The manipulation of the argument page leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might be used.

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/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/cve-a/lvdan/issues/3 ExploitIssue TrackingMitigationThird Party Advisory
https://vuldb.com/submit/792782 Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/355512 Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/355512/cti Permissions RequiredVDB Entry
https://www.tenda.com.cn/ Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-5685), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.