CVE-2026-6123: A vulnerability was found in Tenda F451 1.0.0.7

This month

HIGH 8.8MITIGATE

CVE-2026-6123 is a high-severity flaw (CVSS 8.8) affecting f451 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in Tenda F451 1.0.0.7. This affects the function fromAddressNat of the file /goform/addressNat of the component httpd. Performing a manipulation of the argument entrys results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made public and could 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	2026-04-12
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

2026-04-12 09:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

tenda f451 firmware MITIGATE

Affected: 1.0.0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0.7

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-2026-6123?

f451 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-6123 being exploited?

CVE-2026-6123 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-2026-6123 affect?

CVE-2026-6123 affects f451 firmware. Severity is high (CVSS 8.8). A vulnerability was found in Tenda F451 1.0.0.7. This affects the function fromAddressNat of the file /goform/addressNat of the component httpd. Performing a manipulation of the argument entrys results in stack-based buffer overflow. Remote

How urgent is CVE-2026-6123?

Priority 42/100. High severity

Software pages

Apache HTTP Server vulnerabilities

Related CVEs

CVE-2026-6135 HIGH 8.8 MITIGATE A weakness has been identified in Tenda F451 1.0.0.7_cn_svn7958
CVE-2026-5991 HIGH 8.8 MITIGATE A vulnerability was found in Tenda F451 1.0.0.7
CVE-2026-6133 HIGH 8.8 MITIGATE A vulnerability was identified in Tenda F451 1.0.0.7_cn_svn7958
CVE-2026-6120 HIGH 8.8 MITIGATE A vulnerability was detected in Tenda F451 1.0.0.7
CVE-2026-6124 HIGH 8.8 MITIGATE A vulnerability was determined in Tenda F451 1.0.0.7

References

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