Buffer Overflow Vulnerability in UTT 进取 520W by UTT
CVE-2026-0837

8.7HIGH

Key Information:

Vendor

Utt

Status
进取 520w
Vendor
CVE Published:
11 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-0837?

A buffer overflow vulnerability has been identified in the UTT 进取 520W router version 1.7.7-180627, specifically in the strcpy function within the /goform/formFireWall file. This vulnerability is triggered by improper handling of user-supplied input in the GroupName argument, allowing attackers to execute arbitrary code remotely. Exploitation of this flaw is feasible, as publicly available exploits exist. Despite early notification, the vendor has not responded to the disclosure.

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Affected Version(s)

进取 520W 1.7.7-180627

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-2026-0837 - Proof of Concept

References

https://vuldb.com/?id.340437
vdb-entrytechnical-description
https://vuldb.com/?ctiid.340437
signaturepermissions-required
https://vuldb.com/?submit.729019
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

Lena-lyy02 (VulDB User)
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