Buffer Overflow Vulnerability in UTT 进取 520W by UTT
CVE-2026-0836

8.7HIGH

Key Information:

Vendor

Utt

Status
进取 520w
Vendor
CVE Published:
11 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-0836?

A buffer overflow vulnerability exists in the UTT 进取 520W router, specifically within the function strcpy of the file /goform/formConfigFastDirectionW. This vulnerability can be exploited remotely by manipulating the 'ssid' argument, leading to unauthorized access and potential compromise of the device. Despite the public disclosure of this exploit, the vendor has not responded to the security concerns raised.

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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-2026-0836 - Proof of Concept

References

https://vuldb.com/?id.340436
vdb-entrytechnical-description
https://vuldb.com/?ctiid.340436
signaturepermissions-required
https://vuldb.com/?submit.729018
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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