What is CVE-2026-7218?

CVE-2026-7218 is a high-severity vulnerability in Totolink N300rt, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.2/10. Published 2026-04-28.

How severe is CVE-2026-7218?

High severity. CVSS v3 base score is 7.2 out of 10.

Buffer overflow in Totolink N300rt

CVE-2026-7218

A vulnerability was detected in Totolink N300RT 3.4.0-B20250430. The impacted element is the function is_cmd_string_valid of the file /boafrm/formWsc of the component libapmib.so. Performing a manipulation of the argument localPin results…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (27.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Totolink N300rt — versions 3.4.0-B20250430

Weakness classification (CWE)

References

VDB-359818 | Totolink N300RT libapmib.so formWsc is_cmd_string_valid buffer overflow (technical-description, vdb-entry)
VDB-359818 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #802127 | Totolink N300RT Router V3.4.0-B20250430 Buffer Overflow (third-party-advisory)
cna@vuldb.com (exploit)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-7218?: CVE-2026-7218 is a high-severity vulnerability in Totolink N300rt, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.2/10. Published 2026-04-28.
How severe is CVE-2026-7218?: High severity. CVSS v3 base score is 7.2 out of 10.