OS Command Injection Vulnerability in Linksys Wireless Range Extenders
CVE-2025-5440

5.3MEDIUM

Key Information:

Vendor

Linksys
Status
Re6500
Re6250
Re6300
Re6350
Vendor
CVE Published:
2 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5440?

A significant vulnerability exists in several models of Linksys wireless range extenders, specifically in the NTP function of the affected firmware versions. This flaw enables an attacker to exploit the argument inputs related to date and time to inject arbitrary operating system commands. The attack can be conducted remotely, making it particularly concerning for network security. The vendor has been notified but has not addressed this issue, leaving users potentially exposed to exploitation.

Affected Version(s)

RE6250 1.0.013.001

RE6250 1.0.04.001

RE6250 1.0.04.002

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-2025-5440 - Proof of Concept

References

https://vuldb.com/?id.310779
vdb-entrytechnical-description
https://vuldb.com/?ctiid.310779
signaturepermissions-required
https://vuldb.com/?submit.584362
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

pjqwudi (VulDB User)
.