What is CVE-2026-6196?

CVE-2026-6196 is a high-severity vulnerability in Tenda F456, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-13.

How severe is CVE-2026-6196?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Tenda F456

CVE-2026-6196

A vulnerability was detected in Tenda F456 1.0.0.5. This affects the function fromexeCommand of the file /goform/exeCommand. Performing a manipulation of the argument cmdinput results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.

Vulnerability class: Buffer Overflow

EPSS: 0.006 (44.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda F456 — versions 1.0.0.5

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-6196?: CVE-2026-6196 is a high-severity vulnerability in Tenda F456, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-13.
How severe is CVE-2026-6196?: High severity. CVSS v3 base score is 8.8 out of 10.