Security Flaw in TOTOLINK EX200 Affecting vsftpd Configuration
CVE-2026-11620

6.9MEDIUM

Key Information:

Vendor

Totolink
Status
Ex200
Vendor
CVE Published:
9 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11620?

A security vulnerability has been identified in the TOTOLINK EX200, specifically affecting the vsftpd component. This issue arises from a misconfiguration in the /etc/vsftpd.conf file, which creates a potential for least privilege violations. Remote attackers can exploit this flaw to gain unauthorized access and perform actions with insufficient privileges, posing a significant security risk. Prompt attention to this issue is crucial to safeguard against potential exploits that may already be publicly available.

Affected Version(s)

EX200 4.0.3c.7646

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-2026-11620 - Proof of Concept

References

https://vuldb.com/vuln/369301
vdb-entry
https://vuldb.com/vuln/369301/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-11620
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
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

L-14 (VulDB User)
.