What is CVE-2026-6186?

CVE-2026-6186 is a high-severity vulnerability in Utt Hiper 1200gw, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-13.

How severe is CVE-2026-6186?

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

Buffer overflow in Utt Hiper 1200gw

CVE-2026-6186

A security vulnerability has been detected in UTT HiPER 1200GW up to 2.5.3-170306. This vulnerability affects the function strcpy of the file /goform/formNatStaticMap. The manipulation of the argument NatBind leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

Vulnerability class: Buffer Overflow

EPSS: 0.006 (47.9th 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

Utt Hiper 1200gw — versions 2.5.3-170306

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-6186?: CVE-2026-6186 is a high-severity vulnerability in Utt Hiper 1200gw, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-13.
How severe is CVE-2026-6186?: High severity. CVSS v3 base score is 8.8 out of 10.