What is CVE-2025-8140?

CVE-2025-8140 is a high-severity vulnerability in Totolink A702r, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-07-25.

How severe is CVE-2025-8140?

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

Buffer overflow in Totolink A702r

CVE-2025-8140

A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formWlanMultipleAP of the component HTTP POST Request Handler. The manipulation…

Vulnerability class: Buffer Overflow

EPSS: 0.071 (93.4th 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 A702r — versions 4.0.0-B20230721.1521
Totolink A702r_firmware — versions 4.0.0-b20230721.1521

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2025-8140?: CVE-2025-8140 is a high-severity vulnerability in Totolink A702r, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-07-25.
How severe is CVE-2025-8140?: High severity. CVSS v3 base score is 8.8 out of 10.