OS Command Injection in Linksys E1700 by Cisco
CVE-2026-108895

9.4CRITICAL

Key Information:

Vendor

Linksys
Status
E1700
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-108895?

A significant weakness has been detected in the Linksys E1700 version 1.0.0.4.003, specifically affecting the setDMZ function in the /goform/setDMZ file. This vulnerability allows for the manipulation of the MAC_addr argument, leading to the potential execution of OS commands. The exploit is remote, meaning an attacker can execute this without physical access to the device. Despite early disclosures to the vendor, no response was received, highlighting the urgency for users to assess their device security and implement necessary safeguards.

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-2026-108895 - Proof of Concept

References

https://vuldb.com/vuln/416687
vdb-entrytechnical-description
https://vuldb.com/vuln/416687/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-108895
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
.