Buffer Overflow Vulnerability in Linksys Wireless Routers
CVE-2025-9356

8.7HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9356?

A vulnerability exists in various Linksys wireless router models, specifically within the 'inboundFilterAdd' function. This security flaw allows for manipulation of the 'ruleName' argument, potentially leading to a stack-based buffer overflow. The risk of exploitation is critical, as it can be executed remotely, and details of this vulnerability have been publicly disclosed. The vendor has been notified of the issue but has not responded to address the concerns raised.

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-2025-9356 - Proof of Concept

References

https://vuldb.com/?id.321059
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321059
signaturepermissions-required
https://vuldb.com/?submit.631528
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

pjq123 (VulDB User)
.
CVE-2025-9356 : Buffer Overflow Vulnerability in Linksys Wireless Routers