PatchTheCVECVE-2026-3677: A vulnerability was found in Tenda FH451 1.0.0.9
CVE-2026-3677 is a high-severity flaw (CVSS 8.8) affecting fh451 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 FH451 1.0.0.9. This impacts the function fromSetCfm of the file /goform/setcfm. The manipulation of the argument funcname/funcpara1 results in stack-based buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used.
Why this priority
- High severity
- Public exploit reference
No fix is published yet: follow the downgrade or mitigation steps.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2026-3677?
fh451 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2026-3677 being exploited?
CVE-2026-3677 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-2026-3677 affect?
CVE-2026-3677 affects fh451 firmware. Severity is high (CVSS 8.8). A vulnerability was found in Tenda FH451 1.0.0.9. This impacts the function fromSetCfm of the file /goform/setcfm. The manipulation of the argument funcname/funcpara1 results in stack-based buffer overflow. The attack may be performed from
How urgent is CVE-2026-3677?
Priority 49/100. High severity; Public exploit reference
Related CVEs
- CVE-2026-4535 HIGH 8.8 MITIGATE A vulnerability has been found in Tenda FH451 1.0.0.9
- CVE-2026-4534 HIGH 8.8 MITIGATE A flaw has been found in Tenda FH451 1.0.0.9
- CVE-2026-3678 HIGH 8.8 MITIGATE A vulnerability was determined in Tenda FH451 1.0.0.9