Stack-based Buffer Overflow in Linksys Routers
CVE-2025-9358

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-2025-9358?

A severe security flaw has been identified in multiple Linksys router models, specifically within the setSysAdm function. The vulnerability stems from improper handling of the admpasshint argument, leading to a stack-based buffer overflow that can be exploited remotely. This flaw poses a significant risk as it allows attackers to execute arbitrary code, potentially compromising the affected devices' security. Despite early disclosure attempts to the vendor, no response has been received regarding remediation or guidance.

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-2025-9358 - Proof of Concept

References

https://vuldb.com/?id.321061
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321061
signaturepermissions-required
https://vuldb.com/?submit.631530
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-2025-9358 : Stack-based Buffer Overflow in Linksys Routers