What is CVE-2026-85031?

CVE-2026-85031 is a critical-severity vulnerability, 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.

CVE-2026-85031

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

EPSS: 0.006 (45.4th percentile) — read the EPSS interpretation.

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.

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com
cna@vuldb.com

Frequently asked questions

What is CVE-2026-85031?: CVE-2026-85031 is a critical-severity vulnerability, 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.