What is the CVSS score of CVE-2025-70327?

CVE-2025-70327 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.0%.

Which versions of X5000r Firmware are affected by CVE-2025-70327?

TOTOLIK X5000R routers (v9.1.0cu_2415_B20250515) contain a critical vulnerability enabling remote attackers to execute arbitrary commands with a 9.8 CVSS score.

Is there a public PoC exploit available for CVE-2025-70327?

Yes, a public proof-of-concept exploit is available for CVE-2025-70327. Prioritise patching immediately. EPSS: 2.0%.

How to fix or mitigate CVE-2025-70327?

Within 24 hours: Inventory all TOTOLINK X5000R deployments and isolate affected devices to segregated network segments. Within 7 days: Implement network access controls restricting /usr/sbin/lighttpd handler access, deploy WAF rules blocking setDiagnosisCfg requests, and disable the affected diagnostic feature if operationally feasible. Within 30 days: Evaluate replacement hardware, establish automated monitoring for exploitation attempts, and conduct threat assessment for potentially compromised systems.

X5000r Firmware CVE-2025-70327

CRITICAL

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') (CWE-88)

2026-02-23 cve@mitre.org

Denial Of Service X5000r Firmware TOTOLINK

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 26, 2026 - 03:06 vuln.today

Public exploit code

CVE Published

Feb 23, 2026 - 21:19 nvd

CRITICAL 9.8

DescriptionCVE.org

TOTOLINK X5000R v9.1.0cu_2415_B20250515 contains an argument injection vulnerability in the setDiagnosisCfg handler of the /usr/sbin/lighttpd executable. The ip parameter is retrieved via websGetVar and passed to a ping command through CsteSystem without validating if the input starts with a hyphen (-). This allows remote authenticated attackers to inject arbitrary command-line options into the ping utility, potentially leading to a Denial of Service (DoS) by causing excessive resource consumption or prolonged execution.

AnalysisAI

Argument injection in TOTOLINK X5000R router v9.1.0cu via setDiagnosisCfg handler allows unauthenticated remote code execution. EPSS 2.0% with PoC available.

Technical ContextAI

CWE-88 argument injection in setDiagnosisCfg. Similar to CVE-2026-3301 in TOTOLINK N300RH — systematic vulnerability across the TOTOLINK product line.