Buffer overflow in Totolink Cp450
CVE-2026-85031
A vulnerability was found in TOTOLINK CP450 4.1.0. The impacted element is an unknown function of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument topicurl results in buffer overflow. Remote exploitation of the attack is possible.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.002
Affected products
- Totolink Cp450 — versions 4.1.0
Weakness classification (CWE)
References
- vuldb.com/cve/CVE-2026-85031 (third-party-advisory)
- vuldb.com/submit/853096 (third-party-advisory)
- vuldb.com/vuln/398296 (technical-description, vdb-entry)
- vuldb.com/vuln/398296/cti (signature, permissions-required)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-85031?
- CVE-2026-85031 is a critical-severity vulnerability in Totolink Cp450, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.9/10. Published 2026-09-03.
- How severe is CVE-2026-85031?
- Critical severity. CVSS v3 base score is 9.9 out of 10.