Stack-Based Buffer Overflow in Linksys E1700 Router
CVE-2026-108893

9.4CRITICAL

Key Information:

Vendor

Linksys
Status
E1700
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-108893?

A stack-based buffer overflow vulnerability exists in the Linksys E1700 router within the setVlan function of the /goform/setVlan file. This flaw allows an attacker to manipulate the vlan_set argument, potentially leading to remote code execution. Public exploits for this vulnerability are available, posing a significant risk to users of affected versions. Despite early notification to the vendor regarding this issue, no response has been received.

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-2026-108893 - Proof of Concept

References

https://vuldb.com/vuln/416685
vdb-entrytechnical-description
https://vuldb.com/vuln/416685/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-108893
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
.