Stack-Based Buffer Overflow in Linksys Wi-Fi Range Extenders
CVE-2025-9248

8.7HIGH

Key Information:

Vendor

Linksys
Status
Re6250
Re6300
Re6350
Re6500
Vendor
CVE Published:
20 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9248?

A significant vulnerability has been identified in multiple models of Linksys Wi-Fi range extenders, specifically within the function RP_pingGatewayByBBS. The flaw, which allows for stack-based buffer overflow, can be exploited by manipulating the argument ssidhex. This vulnerability facilitates remote execution of code, allowing attackers to compromise the affected devices. Despite early disclosure attempts, Linksys has yet to respond, raising concerns about the potential risks and exploitation in the wild. Users are strongly advised to review their device firmware and implement any necessary security measures.

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-2025-9248 - Proof of Concept

References

https://vuldb.com/?id.320779
vdb-entrytechnical-description
https://vuldb.com/?ctiid.320779
signaturepermissions-required
https://vuldb.com/?submit.631521
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

pjqwudi (VulDB User)
.
CVE-2025-9248 : Stack-Based Buffer Overflow in Linksys Wi-Fi Range Extenders