OS Command Injection Vulnerability in Totolink A7100RU Router
CVE-2026-5690

6.9MEDIUM

Key Information:

Vendor

Totolink

Status
Vendor
CVE Published:
6 April 2026

Badges

๐Ÿ‘พ Exploit Exists๐ŸŸก Public PoC

What is CVE-2026-5690?

A vulnerability exists in the Totolink A7100RU router due to improper validation in the setRemoteCfg function of the cstecgi.cgi file. By manipulating the enable argument, an attacker can execute OS commands remotely, potentially compromising the device's security. This exploit has been publicly disclosed, indicating an urgent need for users to secure their devices to prevent unauthorized access and control.

Affected Version(s)

A7100RU 7.4cu.2313_b20191024

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.

References

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • ๐ŸŸก

    Public PoC available

  • ๐Ÿ‘พ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LtzHust2 (VulDB User)
.