Buffer Overflow Vulnerability in UTT 进取 520W by UTT
CVE-2026-0840

8.7HIGH

Key Information:

Vendor

Utt

Status
进取 520w
Vendor
CVE Published:
11 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-0840?

A security vulnerability in UTT 进取 520W version 1.7.7-180627 has been identified, specifically related to the function strcpy located in the file /goform/formConfigNoticeConfig. Exploitation of the timestart argument can trigger a buffer overflow, which leaves the affected system open to remote attacks. The vulnerability has been publicly disclosed, and attempts to inform the vendor regarding this issue went unanswered. This presents a significant risk that may be leveraged by malicious actors.

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Deploy the Patch

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-2026-0840 - Proof of Concept

References

https://vuldb.com/?id.340440
vdb-entrytechnical-description
https://vuldb.com/?ctiid.340440
signaturepermissions-required
https://vuldb.com/?submit.729029
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

GUOTINGTING (VulDB User)
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