Stack-Based Buffer Overflow in Linksys Wireless Routers
CVE-2025-9249

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-2025-9249?

A stack-based buffer overflow vulnerability exists in the Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 routers due to improper handling of input parameters in the DHCPReserveAddGroup function. This flaw allows an attacker to exploit it remotely by sending crafted requests that manipulate parameters such as enable_group, name_group, ip_group, and mac_group. The potential exploitation of this vulnerability can lead to unauthorized access and compromise the device's integrity. The issue has been disclosed publicly, and the vendor has not responded to early notifications regarding the vulnerability.

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-2025-9249 - Proof of Concept

References

https://vuldb.com/?id.320780
vdb-entrytechnical-description
https://vuldb.com/?ctiid.320780
signaturepermissions-required
https://vuldb.com/?submit.631522
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-2025-9249 : Stack-Based Buffer Overflow in Linksys Wireless Routers