CVE-2026-5684: A vulnerability was determined in Tenda CX12L 16.03.53.12

This month

HIGH 8.0MITIGATE

CVE-2026-5684 is a high-severity flaw (CVSS 8.0) affecting cx12l firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was determined in Tenda CX12L 16.03.53.12. Affected by this issue is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack requires access to the local network. The exploit has been publicly disclosed and may be utilized.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.0 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-119, CWE-121
Published	2026-04-06
Last modified	2026-07-24

Publisher (CNA): VulDB · Vendor: tenda

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-06 22:16 UTCPublished CVE record published
2026-07-24 09:10 UTCUpdated Record last modified

tenda cx12l firmware MITIGATE

Affected: 16.03.53.12

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.03.53.12

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-5684?

cx12l firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-5684 being exploited?

CVE-2026-5684 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-5684 affect?

CVE-2026-5684 affects cx12l firmware. Severity is high (CVSS 8.0). A vulnerability was determined in Tenda CX12L 16.03.53.12. Affected by this issue is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. Executing a manipulation of the argument page can lead to stack-based buffe

How urgent is CVE-2026-5684?

Priority 45/100. High severity; Public exploit reference

Related CVEs

CVE-2026-8138 HIGH 8.8 MITIGATE A vulnerability was found in Tenda CX12L 16.03.53.12
CVE-2026-5685 HIGH 8.8 MITIGATE A vulnerability was identified in Tenda CX12L 16.03.53.12
CVE-2026-5686 HIGH 8.8 MITIGATE A security flaw has been discovered in Tenda CX12L 16.03.53.12
CVE-2026-5687 HIGH 8.8 MITIGATE A weakness has been identified in Tenda CX12L 16.03.53.12
CVE-2026-5683 MEDIUM 5.5 MITIGATE A vulnerability was found in Tenda CX12L 16.03.53.12

References

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