Buffer Overflow Vulnerability in UTT HiPER 840G API Component
CVE-2025-6733

8.7HIGH

Key Information:

Vendor

Utt

Status
Hiper 840g
Vendor
CVE Published:
26 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6733?

A buffer overflow vulnerability exists in the UTT HiPER 840G API component, particularly in the function sub_416928 of the /goform/formConfigDnsFilterGlobal file. This flaw can be exploited by manipulating the GroupName argument, leading to potential remote code execution. The vulnerability has been publicly disclosed, and the lack of response from the vendor raises concerns regarding the timeliness and effectiveness of security measures. Users of affected UTT HiPER 840G devices are advised to implement safeguards against potential exploitation.

Affected Version(s)

HiPER 840G 3.1.1-190328

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-2025-6733 - Proof of Concept

References

https://vuldb.com/?id.314008
vdb-entrytechnical-description
https://vuldb.com/?ctiid.314008
signaturepermissions-required
https://vuldb.com/?submit.597678
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

yuhongxiang (VulDB User)
.
CVE-2025-6733 : Buffer Overflow Vulnerability in UTT HiPER 840G API Component