Command Injection Vulnerability in Totolink WA300 Router
CVE-2026-7721

5.3MEDIUM

Key Information:

Vendor

Totolink
Status
Wa300
Vendor
CVE Published:
4 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7721?

A security vulnerability has been identified in the Totolink WA300 router, specifically within the NTPSyncWithHost function located in the /cgi-bin/cstecgi.cgi file. This flaw allows an attacker to manipulate the 'hostTime' argument, leading to the possibility of command injection. The vulnerability can be exploited remotely, posing a significant risk to users of the device. Early disclosure of the exploit means that proactive measures should be taken to secure affected systems.

Affected Version(s)

WA300 5.2cu.7112_B20190227

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-2026-7721 - Proof of Concept

References

https://vuldb.com/vuln/360897
vdb-entrytechnical-description
https://vuldb.com/vuln/360897/cti
signaturepermissions-required
https://vuldb.com/submit/807199
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

wxhwxhwxh_mie (VulDB User)
.