Stack-Based Buffer Overflow in Linksys Routers RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000
CVE-2025-9361

8.7HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9361?

A vulnerability exists in multiple Linksys router models involving the function ipRangeBlockManageRule, where improper handling of arguments can lead to a stack-based buffer overflow. This flaw allows an attacker to manipulate inputs such as ipRangeBlockRuleName, scheduleIp, and ipRangeBlockRuleIpAddr, potentially enabling remote exploitation. The issue affects specific firmware versions, and despite early notification to the vendor, no response was received.

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-2025-9361 - Proof of Concept

References

https://vuldb.com/?id.321064
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321064
signaturepermissions-required
https://vuldb.com/?submit.631533
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-2025-9361 : Stack-Based Buffer Overflow in Linksys Routers RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000