What is CVE-2025-6400?

CVE-2025-6400 is a high-severity vulnerability in Totolink N300rh, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-06-21.

How severe is CVE-2025-6400?

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

Buffer overflow in Totolink N300rh

CVE-2025-6400

A vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formPortFw of the component HTTP POST Message Handler. The manipulation o…

Vulnerability class: Buffer Overflow

EPSS: 0.008 (51.8th 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

Totolink N300rh — versions 6.1c.1390_B20191101
Totolink N300rh_firmware — versions 6.1c.1390_b20191101

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry, Third Party Advisory)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (related, Exploit, Third Party Advisory)
cna@vuldb.com (Exploit, Third Party Advisory, exploit)
cna@vuldb.com (Product, product)

Frequently asked questions

What is CVE-2025-6400?: CVE-2025-6400 is a high-severity vulnerability in Totolink N300rh, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-06-21.
How severe is CVE-2025-6400?: High severity. CVSS v3 base score is 8.8 out of 10.