OS Command Injection Vulnerability in Linksys E1700 Router
CVE-2026-108896

9.4CRITICAL

Key Information:

Vendor

Linksys
Status
E1700
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-108896?

A critical security flaw exists in the Linksys E1700 router that allows an attacker to execute arbitrary commands on the operating system. This vulnerability arises from improper handling of user-supplied input in the setLinksysIpv6 function of the router's web interface. By manipulating the _6rd_prefix or _6rd_prefix_len parameters, a remote attacker could launch an exploit to potentially gain unauthorized access and control over the device. Given the public disclosure of this exploit, users are urged to take immediate action to secure their routers.

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-2026-108896 - Proof of Concept

References

https://vuldb.com/vuln/416683
vdb-entrytechnical-description
https://vuldb.com/vuln/416683/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-108896
third-party-advisory

CVSS V4

Score:
9.4
Severity:
CRITICAL
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)
VulDB CNA Team
.