CVE-2025-9575
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-08-28

Last updated on: 2026-04-29

Assigner: VulDB

Description
A vulnerability was determined in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. This issue affects the function cgiMain of the file /cgi-bin/upload.cgi. Executing manipulation of the argument filename can lead to os command injection. The attack may be performed from a remote location. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
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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-2025-9575
EUVD
EUVD-2025-26141
Affected Vendors & Products
Showing 12 associated CPEs
Vendor Product Version / Range
linksys re6250_firmware 1.0.04.001
linksys re6250 *
linksys re6300_firmware 1.2.07.001
linksys re6300 *
linksys re6350_firmware 1.0.04.001
linksys re6350 *
linksys re7000_firmware 1.1.05.003
linksys re7000 *
linksys re9000_firmware 1.0.04.002
linksys re9000 *
linksys re6500_firmware 1.0.013.001
linksys re6500 *
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-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
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Executive Summary

CVE-2025-9575 is an OS command injection vulnerability in multiple Linksys router models. It exists in the cgiMain function of the /cgi-bin/upload.cgi file, where the 'filename' parameter is not properly sanitized. This allows a remote attacker to inject and execute arbitrary operating system commands on the device by manipulating the filename argument in a crafted request. [1, 2]

Impact Analysis

This vulnerability can compromise the confidentiality, integrity, and availability of affected devices. An attacker can remotely execute arbitrary commands without authentication, potentially taking control of the device, disrupting its operation, or accessing sensitive information. Since no patches or mitigations are available, affected devices remain at risk until replaced. [2]

Detection Guidance

Detection can be performed by monitoring network traffic for suspicious HTTP requests targeting the /cgi-bin/upload.cgi endpoint, specifically those manipulating the 'filename' parameter with unusual or command injection patterns. Since the vulnerability involves OS command injection via the filename argument, commands like curl or wget can be used to test the endpoint with crafted payloads. For example, using curl to send a request with a suspicious filename parameter to see if the device executes commands. Additionally, inspecting logs for unexpected command execution or anomalies related to /cgi-bin/upload.cgi may help detect exploitation attempts. [1, 2]

Mitigation Strategies

Immediate mitigation steps include replacing affected Linksys devices (RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 with vulnerable firmware versions) with alternatives, as no patches or vendor mitigations are available. Restricting network access to the vulnerable devices, especially blocking remote access to the /cgi-bin/upload.cgi endpoint, can reduce exposure. Monitoring for exploitation attempts and isolating affected devices from critical networks are also recommended. [2]

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