Stack-based Buffer Overflow in UTT HiPER 1200GW Model
CVE-2026-18898

8.7HIGH

Key Information:

Vendor

Utt

Status
Hiper 1200gw
Vendor
CVE Published:
5 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18898?

A critical security flaw has been identified in the UTT HiPER 1200GW device, specifically affecting versions up to 2.5.3-170306. The vulnerability lies within the strcpy function located in the /goform/ConfigAdvideo file. Improper manipulation of the 'timestart' argument can lead to a stack-based buffer overflow, allowing remote attackers to exploit this weakness. The potential for remote exploitation raises significant security concerns, as the vendor has not responded to early notifications regarding this issue. This flaw poses a risk for devices still operating on the affected versions.

Affected Version(s)

HiPER 1200GW v2.5.3-170306

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-2026-18898 - Proof of Concept

References

https://vuldb.com/vuln/385933
vdb-entrytechnical-description
https://vuldb.com/vuln/385933/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18898
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

yecp (VulDB User)
VulDB CNA Team
.