Stack-Based Buffer Overflow in Linksys Routers
CVE-2025-9363

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-2025-9363?

A stack-based buffer overflow vulnerability has been discovered within the Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 routers. This vulnerability affects the 'portTriggerManageRule' function, specifically in the handling of user-supplied arguments that can lead to a buffer overflow. If exploited, this vulnerability allows remote attackers to execute arbitrary code or crash the affected device. The flaw has been publicly disclosed, and users are advised to implement security measures immediately as the vendor has not responded to notifications regarding the issue.

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-2025-9363 - Proof of Concept

References

https://vuldb.com/?id.321066
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321066
signaturepermissions-required
https://vuldb.com/?submit.631535
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-2025-9363 : Stack-Based Buffer Overflow in Linksys Routers