Command Injection Vulnerability in TOTOLINK X5000R by TOTOLINK
CVE-2025-70327

9.8CRITICAL

Key Information:

Vendor

TOTOLINK
Status
X5000R
Vendor
CVE Published:
23 February 2026

What is CVE-2025-70327?

The TOTOLINK X5000R router presents a command injection vulnerability in its setDiagnosisCfg handler, specifically in the /usr/sbin/lighttpd executable. The issue arises when the ip parameter is processed by websGetVar and utilized in the ping command without proper validation. As it does not verify if the input begins with a hyphen (-), this flaw enables remote authenticated attackers to inject arbitrary command-line options into the ping utility. Such exploitation can trigger excessive resource consumption or prolonged execution, potentially leading to a Denial of Service (DoS) condition.

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References

https://www.notion.so/TOTOLINK-X5000R-SetDiagnosisCfg-2d1...
https://github.com/neighborhood-H/0-DAY/blob/main/Toto-li...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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