What is the CVSS score of CVE-2025-67445?

CVE-2025-67445 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of X5000r Firmware are affected by CVE-2025-67445?

A high-severity vulnerability in X5000R firmware allows attackers to exhaust system resources, potentially causing service disruptions.

Is there a public PoC exploit available for CVE-2025-67445?

Yes, a public proof-of-concept exploit is available for CVE-2025-67445. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-67445?

Within 24 hours: Identify all X5000R devices running firmware versions up to 9.1.0cu.2415_b20250515 and assess network exposure. Within 7 days: Implement network segmentation to restrict access to affected devices and enable resource monitoring/alerting. Within 30 days: Maintain vendor contact for patch ETA; evaluate firmware upgrade paths or device replacement if patch remains unavailable.

X5000r Firmware CVE-2025-67445

HIGH

Uncontrolled Resource Consumption (CWE-400)

2026-02-24 cve@mitre.org

Denial Of Service X5000r Firmware TOTOLINK

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 27, 2026 - 19:16 vuln.today

Public exploit code

CVE Published

Feb 24, 2026 - 15:21 nvd

HIGH 7.5

DescriptionCVE.org

TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.

AnalysisAI

X5000R Firmware versions up to 9.1.0cu.2415_b20250515 is affected by uncontrolled resource consumption (CVSS 7.5).

Technical ContextAI

This vulnerability (CWE-400: Uncontrolled Resource Consumption) affects X5000R Firmware. TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

CVE-2025-67445 vulnerability details – vuln.today

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X5000r Firmware CVE-2025-67445

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code