Buffer Overflow Vulnerability in UTT HiPER 1250GW Products
CVE-2026-5566

8.7HIGH

Key Information:

Vendor

Utt

Status
Hiper 1250gw
Vendor
CVE Published:
5 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5566?

A buffer overflow vulnerability exists in the UTT HiPER 1250GW, specifically in the strcpy function of the /goform/formNatStaticMap file. By manipulating the argument NatBind, an attacker can trigger a buffer overflow, which allows for remote exploitation of the device. The potential for this vulnerability to be publicly exploited underscores the need for prompt mitigation actions from users and administrators of affected products.

Affected Version(s)

HiPER 1250GW 3.2.7-210907-180535

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-5566 - Proof of Concept

References

https://vuldb.com/vuln/355336
vdb-entrytechnical-description
https://vuldb.com/vuln/355336/cti
signaturepermissions-required
https://vuldb.com/submit/782993
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Doma (VulDB User)
.