Stack-based Buffer Overflow in Linksys E1700 Router
CVE-2025-9526

8.7HIGH

Key Information:

Vendor

Linksys
Status
E1700
Vendor
CVE Published:
27 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9526?

A vulnerability in the Linksys E1700 router's setSysAdm function located in the /goform/setSysAdm file leads to a stack-based buffer overflow. This issue allows for remote exploitation through manipulation of the rm_port argument. Despite early notification to the vendor regarding the vulnerability, no response was received, raising concerns over the risk of potential attacks. Users and administrators of the Linksys E1700 should take caution and consider implementing security measures to mitigate exposure.

Affected Version(s)

E1700 1.0.0.4.003

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-2025-9526 - Proof of Concept

References

https://vuldb.com/?id.321543
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321543
signaturepermissions-required
https://vuldb.com/?submit.634825
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

Bond_yes (VulDB User)
.
CVE-2025-9526 : Stack-based Buffer Overflow in Linksys E1700 Router