CVE-2026-5687

Tenda CX12L NatStaticSetting fromNatStaticSetting stack-based overflow

HIGH
8.8
CVSS Score
Published: April 6, 2026 at 10:00 PM UTC
Updated: July 24, 2026 at 09:23 AM UTC
2 products affected across 1 vendorCX12L FirmwareCx12L

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
PoC

Description

A weakness has been identified in Tenda CX12L 16.03.53.12. This issue affects the function fromNatStaticSetting of the file /goform/NatStaticSetting. This manipulation of the argument page causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

tenda-cx12l (same device)
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

ExploitIssue TrackingMitigationThird Party Advisory
https://github.com/cve-a/lvdan/issues/5
Third Party AdvisoryVDB Entry
https://vuldb.com/submit/792785
VDB EntryTechnical DescriptionThird Party Advisory
https://vuldb.com/vuln/355514
SignaturePermissions RequiredVDB Entry
https://vuldb.com/vuln/355514/cti

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-119CWE-121

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