Stack-Based Buffer Overflow in UTT HiPER 1200GW - Vulnerability Alert
CVE-2026-76003

9.4CRITICAL

Key Information:

Vendor

Utt

Status
Hiper 1200gw
Vendor
CVE Published:
19 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-76003?

A stack-based buffer overflow vulnerability has been discovered in the UTT HiPER 1200GW router, specifically in the strcpy function within the formGroupConfig file. By manipulating the argument 'timestart', attackers may exploit this weakness remotely, potentially leading to unauthorized access or other malicious activities. The exploit code has been made public, making it crucial for users to address this security issue promptly.

Affected Version(s)

HiPER 1200GW 2.5.3-170306

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-2026-76003 - Proof of Concept

References

https://vuldb.com/vuln/391919
vdb-entrytechnical-description
https://vuldb.com/vuln/391919/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-76003
third-party-advisory

CVSS V4

Score:
9.4
Severity:
CRITICAL
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)
.