CVE-2026-7470: A flaw has been found in Tenda 4G300 US_4G300V1.0Mt_V1.01.42_CN_TDC01

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HIGH 8.8MITIGATE

CVE-2026-7470 is a high-severity flaw (CVSS 8.8) affecting 4g300 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw has been found in Tenda 4G300 US_4G300V1.0Mt_V1.01.42_CN_TDC01. Affected is the function sub_427C3C of the file /goform/SafeMacFilter. This manipulation of the argument page causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-119, CWE-121
Published	2026-04-30
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: tenda

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-30 03:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

tenda 4g300 firmware MITIGATE

Affected: 1.01.42_cn_tdc01

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.01.42_cn_tdc01

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-2026-7470?

4g300 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-7470 being exploited?

CVE-2026-7470 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-2026-7470 affect?

CVE-2026-7470 affects 4g300 firmware. Severity is high (CVSS 8.8). A flaw has been found in Tenda 4G300 US_4G300V1.0Mt_V1.01.42_CN_TDC01. Affected is the function sub_427C3C of the file /goform/SafeMacFilter. This manipulation of the argument page causes stack-based buffer overflow. Remote exploitation of

How urgent is CVE-2026-7470?

Priority 42/100. High severity

Related CVEs

CVE-2026-7469 MEDIUM 6.3 MITIGATE A vulnerability was detected in Tenda 4G300 US_4G300V1.0Mt_V1.01.42_CN_TDC01

References

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