Buffer overflow in Totolink A702r
CVE-2025-6940
A vulnerability classified as critical was found in TOTOLINK A702R 4.0.0-B20230721.1521. Affected by this vulnerability is an unknown functionality of the file /boafrm/formParentControl of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (57.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.001
Affected products
- Totolink A702r — versions 4.0.0-B20230721.1521
- Totolink A702r Firmware — versions 4.0.0-b20230721.1521
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/awindog/cve/blob/main/688/27.md (related, Exploit, Third Party Advisory)
- github.com/awindog/cve/blob/main/688/27.md (Exploit, Third Party Advisory, exploit)
- www.totolink.net/ (Product, product)
Frequently asked questions
- What is CVE-2025-6940?
- CVE-2025-6940 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 2025-07-01.
- How severe is CVE-2025-6940?
- High severity. CVSS v3 base score is 8.8 out of 10.