CVE-2025-9581
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-08-28

Last updated on: 2026-04-29

Assigner: VulDB

Description
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.
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Meta Information
Published
2025-08-28
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2025-08-28
EPSS Evaluated
2026-06-14
NVD
CVE-2025-9581
EUVD
EUVD-2025-26131
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
comfast cf-n1_firmware 2.6.0
comfast cf-n1 *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
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Executive Summary

CVE-2025-9581 is a command injection vulnerability in the Comfast CF-N1 device running firmware version 2.6.0. It affects the multi_pppoe function in the /usr/bin/webmgnt executable. The vulnerability occurs because the argument phy_interface is improperly handled, allowing an attacker to inject arbitrary system commands remotely by manipulating this argument. This can lead to unauthorized execution of commands on the device. [1, 2]

Impact Analysis

Exploitation of this vulnerability can lead to unauthorized execution of system commands on the affected device, potentially compromising its confidentiality, integrity, and availability. Attackers may gain access to sensitive information or fully compromise the device. The attack can be performed remotely with low complexity, and public exploits exist, increasing the risk of exploitation. [1, 2]

Detection Guidance

Detection can focus on monitoring for unusual or unauthorized use of the multi_pppoe function, especially calls involving the phy_interface parameter. Since the exploit involves command injection via the one_click_redial action, network or system logs should be inspected for suspicious requests targeting /usr/bin/webmgnt with crafted phy_interface arguments. Specific detection commands are not provided in the resources. However, monitoring HTTP requests or API calls to the multi_pppoe function and analyzing logs for unexpected command execution attempts is recommended. [1, 2]

Mitigation Strategies

Immediate mitigation steps include considering replacement of the affected Comfast CF-N1 device running firmware version 2.6.0, as no known patches or countermeasures are currently available. Restricting remote access to the device and monitoring for exploitation attempts can help reduce risk. Applying network-level protections such as firewall rules to limit access to the vulnerable service may also be beneficial until a fix or update is available. [2]

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