Null Pointer Dereference Vulnerability in D-Link DI-8400 Router
CVE-2025-8175

7.1HIGH

Key Information:

Vendor

D-link
Status
Di-8400
Vendor
CVE Published:
26 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8175?

A security flaw has been identified in the D-Link DI-8400 router, specifically within the usb_paswd.asp component of the jhttpd service. This vulnerability allows an attacker to trigger a null pointer dereference by manipulating the share_enable argument, potentially leading to system instability or service disruption. Remotely exploitable, this weakness poses significant risks and has been publicly disclosed.

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Affected Version(s)

DI-8400 16.07.26A1

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-2025-8175 - Proof of Concept

References

https://vuldb.com/?id.317589
vdb-entrytechnical-description
https://vuldb.com/?ctiid.317589
signaturepermissions-required
https://vuldb.com/?submit.621708
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
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

KrisW (VulDB User)
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