Remote Command Injection in TOTOLINK NR1800X Device
CVE-2026-82597

5.3MEDIUM

Key Information:

Vendor

Totolink
Status
Nr1800x
Vendor
CVE Published:
31 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82597?

A remote command injection vulnerability exists in the TOTOLINK NR1800X that affects the setUssd function within the cgi-bin/cstecgi.cgi file. By manipulating the ussd argument, an attacker can execute unauthorized commands on the device, potentially compromising network security. As the exploit is publicly available, it poses a significant risk to users of this firmware version. It is recommended to update the device software urgently to mitigate this security threat.

Affected Version(s)

NR1800X 9.1.0u.6681_B20230703

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-2026-82597 - Proof of Concept

References

https://vuldb.com/vuln/397092
vdb-entrytechnical-description
https://vuldb.com/vuln/397092/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82597
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

577488768 (VulDB User)
.