Stack-based Buffer Overflow in Linksys Wireless Routers
CVE-2025-9355

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-2025-9355?

A stack-based buffer overflow vulnerability has been detected in multiple Linksys wireless routers, specifically in the scheduleAdd function located in the /goform/scheduleAdd file. By manipulating the argument ruleName, an attacker can potentially exploit this vulnerability remotely. This vulnerability has been disclosed publicly, and attempts to contact the vendor for a fix have gone unanswered. Users of affected models are advised to take precautions to mitigate the risk.

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-2025-9355 - Proof of Concept

References

https://vuldb.com/?id.321058
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321058
signaturepermissions-required
https://vuldb.com/?submit.631527
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-2025-9355 : Stack-based Buffer Overflow in Linksys Wireless Routers