Which versions of Cf N1 Firmware are affected by CVE-2025-9581?

Organizations using A vulnerability should be aware of moderate risk from CVE-2025-9581, a injection vulnerability rated CVSS 5.3.

Is there a public PoC exploit available for CVE-2025-9581?

Yes, a public proof-of-concept exploit is available for CVE-2025-9581. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-9581?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

Cf N1 Firmware CVE-2025-9581

Q: What is the CVSS score of CVE-2025-9581?

CVE-2025-9581 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.2%.

LOW

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)

2025-08-28 cna@vuldb.com

Command Injection Cf N1 Firmware Comfast

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

5.3 (MEDIUM) 2.1 (LOW)

Analysis Generated

Mar 28, 2026 - 19:09 vuln.today

PoC Detected

Sep 11, 2025 - 13:24 vuln.today

Public exploit code

CVE Published

Aug 28, 2025 - 19:15 nvd

MEDIUM 5.3

DescriptionCVE.org

A vulnerability was detected in Comfast CF-N1 2.6.0. This impacts the function multi_pppoe of the file /usr/bin/webmgnt. Performing manipulation of the argument phy_interface results in command injection. The attack may be initiated remotely. The exploit is now public and may be used.

AnalysisAI

A vulnerability was detected in Comfast CF-N1 2.6.0. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-74. A vulnerability was detected in Comfast CF-N1 2.6.0. This impacts the function multi_pppoe of the file /usr/bin/webmgnt. Performing manipulation of the argument phy_interface results in command injection. The attack may be initiated remotely. The exploit is now public and may be used. Affected products include: Comfast Cf-N1 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.