What is CVE-2026-4487?

CVE-2026-4487 is a high-severity vulnerability in Utt Hiper 1200gw, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-03-20.

How severe is CVE-2026-4487?

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

Buffer overflow in Utt Hiper 1200gw

CVE-2026-4487

A vulnerability was determined in UTT HiPER 1200GW up to 2.5.3-170306. This impacts the function strcpy of the file /goform/websHostFilter. This manipulation causes buffer overflow. It is possible to initiate the attack remotely. The explo…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (19.4th 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/E:P/RL:X/RC:R.

Affected products

Utt Hiper 1200gw — versions 2.5.3-170306

Weakness classification (CWE)

References

VDB-352010 | UTT HiPER 1200GW websHostFilter strcpy buffer overflow (vdb-entry, technical-description)
VDB-352010 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #773538 | UTT HiPER 1200GW <=v2.5.3-170306 buffer overflow (third-party-advisory)
github.com/hmKunlun/UTTHiPER/blob/main/HiPER 1200GW.md (exploit)

Frequently asked questions

What is CVE-2026-4487?: CVE-2026-4487 is a high-severity vulnerability in Utt Hiper 1200gw, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-03-20.
How severe is CVE-2026-4487?: High severity. CVSS v3 base score is 8.8 out of 10.