Stack-Based Buffer Overflow in Linksys Wireless Range Extenders
CVE-2025-9253

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-2025-9253?

A notable stack-based buffer overflow vulnerability exists in multiple Linksys wireless range extenders, specifically in the RP_doSpecifySiteSurvey function. An attacker can exploit this issue remotely by manipulating the ssidhex argument, potentially allowing for unauthorized access or control over the device. The impacted devices include popular models like RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 across various firmware versions. Despite early notification to the vendor, no response was received, raising concerns about the potential risks to users.

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-2025-9253 - Proof of Concept

References

https://vuldb.com/?id.320784
vdb-entrytechnical-description
https://vuldb.com/?ctiid.320784
signaturepermissions-required
https://vuldb.com/?submit.631526
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-2025-9253 : Stack-Based Buffer Overflow in Linksys Wireless Range Extenders