What is CVE-2026-114382?

CVE-2026-114382 is a critical-severity vulnerability in Totolink Ex200, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 10.0/10. Published 2026-10-21.

How severe is CVE-2026-114382?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Buffer overflow in Totolink Ex200

CVE-2026-114382

A security flaw has been discovered in TOTOLINK EX200 5.2.3c.7200. This affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. The manipulation of the argument Comment results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

Vulnerability class: Buffer Overflow

Published 2026-10-21 · last modified 2026-10-22.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Totolink Ex200 — versions 5.2.3c.7200

Weakness classification (CWE)

References

vuldb.com/vuln/424741 (technical-description, vdb-entry)
vuldb.com/vuln/424741/cti (signature, permissions-required)
vuldb.com/cve/CVE-2026-114382 (third-party-advisory)
vuldb.com/submit/1019881 (third-party-advisory)
github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE1/report… (exploit)
www.totolink.net/ (product)

Frequently asked questions

What is CVE-2026-114382?: CVE-2026-114382 is a critical-severity vulnerability in Totolink Ex200, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 10.0/10. Published 2026-10-21.
How severe is CVE-2026-114382?: Critical severity. CVSS v3 base score is 10.0 out of 10.