What is CVE-2026-4490?

CVE-2026-4490 is a high-severity vulnerability in Tenda A18 Pro, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-03-20.

How severe is CVE-2026-4490?

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

Buffer overflow in Tenda A18 Pro

CVE-2026-4490

A flaw has been found in Tenda A18 Pro 02.03.02.28. This issue affects the function setSchedWifi of the file /goform/openSchedWifi. This manipulation causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Vulnerability class: Buffer Overflow

EPSS: 0.006 (43.9th 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 A18 Pro — versions 02.03.02.28

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 (issue-tracking, exploit)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-4490?: CVE-2026-4490 is a high-severity vulnerability in Tenda A18 Pro, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-03-20.
How severe is CVE-2026-4490?: High severity. CVSS v3 base score is 8.8 out of 10.