Which versions of Cf E4 Firmware are affected by CVE-2026-2537?

Organizations using A vulnerability should be aware of moderate risk from CVE-2026-2537, a injection vulnerability rated CVSS 4.7.

Is there a public PoC exploit available for CVE-2026-2537?

Yes, a public proof-of-concept exploit is available for CVE-2026-2537. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2026-2537?

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

Cf E4 Firmware CVE-2026-2537

Q: What is the CVSS score of CVE-2026-2537?

CVE-2026-2537 has a CVSS 4.0 base score of 2.0 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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)

2026-02-16 cna@vuldb.com

Command Injection Cf E4 Firmware Comfast

2.0

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.0 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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

High

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

4.7 (MEDIUM) 2.0 (LOW)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 25, 2026 - 15:29 vuln.today

Public exploit code

CVE Published

Feb 16, 2026 - 06:16 nvd

MEDIUM 4.7

DescriptionCVE.org

A vulnerability was identified in Comfast CF-E4 2.6.0.1. This impacts an unknown function of the file /cgi-bin/mbox-config?method=SET&section=ntp_timezone of the component HTTP POST Request Handler. Such manipulation of the argument timestr leads to command injection. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Command injection in Comfast CF-E4 2.6.0.1 firmware allows remote attackers with high privileges to execute arbitrary commands through the timestr parameter in the NTP timezone configuration endpoint. Public exploit code exists for this vulnerability, and the vendor has not provided a patch despite early disclosure notification. The attack requires network access and high-level authentication but carries a low CVSS score due to limited scope of impact.

Technical ContextAI

Affects Cf-E4 Firmware. A vulnerability was identified in Comfast CF-E4 2.6.0.1. This impacts an unknown function of the file /cgi-bin/mbox-config?method=SET&section=ntp_timezone of the component HTTP POST Request Handler. Such manipulation of the argument timestr leads to command injection. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.