Which versions of Cf N1 Firmware are affected by CVE-2026-2535?

Organizations using Comfast CF-N1 should be aware of moderate risk from CVE-2026-2535, a injection vulnerability rated CVSS 6.3.

Is there a public PoC exploit available for CVE-2026-2535?

Yes, a public proof-of-concept exploit is available for CVE-2026-2535. Prioritise patching immediately. EPSS: 0.4%.

Cf N1 Firmware CVE-2026-2535

Q: What is the CVSS score of CVE-2026-2535?

CVE-2026-2535 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: 0.4%.

LOW

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

2026-02-16 cna@vuldb.com

Command Injection Cf N1 Firmware

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

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

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

6.3 (MEDIUM) 2.1 (LOW)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 19, 2026 - 19:40 vuln.today

Public exploit code

CVE Published

Feb 16, 2026 - 05:16 nvd

MEDIUM 6.3

DescriptionCVE.org

A vulnerability was found in Comfast CF-N1 V2 2.6.0.2. The impacted element is the function sub_44AB9C of the file /cgi-bin/mbox-config?method=SET&section=ptest_channel. The manipulation of the argument channel results in command injection. The attack can be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Command injection in Comfast CF-N1 V2 2.6.0.2 firmware allows authenticated remote attackers to execute arbitrary commands via the channel parameter in the /cgi-bin/mbox-config endpoint. Public exploit code exists for this vulnerability, and the vendor has not released a patch despite early notification. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 6.3 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this flaw, command injection.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems running Comfast CF-N1 and apply vendor patches as part of regular patch cycle. …

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CVE-2026-2535 vulnerability details – vuln.today

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