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CVE-2025-15620: Critical Vulnerability in HiOS Switch Platform

A critical denial-of-service vulnerability has been identified in the HiOS Switch Platform. Remote attackers can exploit this flaw to disrupt services. Organizations must prioritize remediation to maintain availability.

CRITICALCVSS 9.2 · Published April 2, 2026

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The HiOS Switch Platform has a critical vulnerability that allows remote attackers to trigger a denial-of-service (DoS) condition through crafted HTTP GET requests. Specifically, versions 09.1.00 through 09.4.05 and 10.3.01 are affected. The vulnerability enables attackers to reboot the device by sending malicious requests to a specific endpoint, which results in service disruption and unavailability. The CVSS score of this vulnerability is 9.2, indicating a critical severity level.

Risk to organizations includes potential downtime and loss of service availability, which can significantly impact operational effectiveness. This issue is particularly concerning for environments reliant on uninterrupted network services. Given the nature of the vulnerability, organizations should prioritize patching immediately.

Currently, there is no known exploit for this vulnerability, and it is not listed in the Known Exploited Vulnerabilities (KEV) catalog. Nevertheless, organizations should be vigilant and prepare for possible future exploits as this vulnerability is actively discussed in security circles.

The urgency for defenders is high, as the availability impact is significant. Organizations that utilize HiOS Switch Platform should take immediate action to mitigate risks associated with this vulnerability.

Vulnerability Details

According to the advisory, the vulnerability exists in the web interface of the HiOS Switch Platform. The specific versions affected are 09.1.00 through 09.4.05 and 10.3.01. The vulnerability is classified under CWE-306: Missing Authentication for Critical Function. It has a CVSS score of 9.2, categorized as critical, indicating that it poses a severe threat to the availability of the services provided by the switch.

Technical Analysis

The root cause of this vulnerability lies in the web interface's inability to properly handle certain HTTP GET requests. The attack vector is network-based, with a low attack complexity and no required privileges or user interaction. If exploited, this vulnerability can lead to a high impact on availability, as it allows attackers to cause an uncontrolled reboot of the device.

The attack does not compromise confidentiality or integrity, but it can severely disrupt service availability. Security teams must ensure that adequate monitoring and logging are in place to detect unusual traffic patterns that may indicate an attempt to exploit this vulnerability.

Risk & Impact Analysis

Organizations using the HiOS Switch Platform face significant risks associated with this vulnerability. The potential for service disruption can lead to substantial operational impacts, particularly in critical infrastructure environments where uptime is essential. The urgency for patching is underscored by the critical nature of this vulnerability and its potential to cause widespread service outages.

Given the availability impact, organizations should consider this a high-priority issue, especially in sectors where network reliability is critical. The nature of the vulnerability suggests that it could be exploited with relatively low effort, making it essential for organizations to act swiftly.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

The vulnerability affects HiOS Switch Platform versions 09.1.00 through 09.4.05 and 10.3.01. Organizations should ensure that they update to the latest version to mitigate this vulnerability.

Mitigation & Remediation

Organizations should prioritize patching to the latest version of the HiOS Switch Platform that addresses this vulnerability. If an immediate patch is not available, consider implementing network segmentation to limit exposure, as well as monitoring for unusual traffic patterns indicative of exploitation attempts. It is also advisable to engage in penetration testing to evaluate the effectiveness of the mitigations.

Detection Guidance

Organizations should monitor logs for any unauthorized access attempts and unusual HTTP GET requests to the switch's web interface. Anomalies in system performance or availability should be flagged for further investigation.

AppSecure Threat Intelligence Insight

This vulnerability represents a significant risk for organizations utilizing the HiOS Switch Platform. The potential for service disruption highlights the importance of maintaining up-to-date systems and rigorous monitoring practices. Security teams should learn from this incident to strengthen their defenses against future vulnerabilities, focusing on proactive measures such as regular updates and penetration testing.

For further insights, organizations may refer to our vulnerability management program and consider our penetration testing methodology resources for comprehensive guidance.

Engaging in proactive security measures and continuous monitoring will help mitigate risks associated with vulnerabilities like CVE-2025-15620.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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