CVE-2022-2591 in FLEX-1085
Summary
by MITRE • 08/01/2022
A vulnerability classified as critical has been found in TEM FLEX-1085 1.6.0. Affected is an unknown function of the file /sistema/flash/reboot. The manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 05/26/2026
The vulnerability identified as CVE-2022-2591 represents a critical security flaw within the TEM FLEX-1085 device firmware version 1.6.0, specifically affecting the reboot functionality within the /sistema/flash/reboot file. This issue constitutes a denial of service vulnerability that can be exploited remotely, posing significant operational risks to affected systems. The flaw exists in the device's firmware implementation where an improperly handled function within the reboot process creates a condition that can be triggered by external actors. The vulnerability's classification as critical indicates its potential to severely impact system availability and operational continuity, particularly in environments where uninterrupted service is essential.
The technical exploitation of this vulnerability occurs through remote manipulation of the affected function within the reboot file, allowing attackers to disrupt normal system operations and potentially render the device inoperable. This remote attack vector eliminates the need for physical access to the device, making the vulnerability particularly dangerous as it can be exploited from any network location with appropriate network connectivity. The flaw likely stems from inadequate input validation or improper error handling within the reboot function, creating a condition where malicious input can cause the system to enter an unstable state or fail to complete the reboot process properly. Such vulnerabilities often fall under CWE-400, which encompasses improper handling of resources and system calls that can lead to denial of service conditions.
The operational impact of CVE-2022-2591 extends beyond simple service disruption, as it can compromise the overall reliability and security posture of affected installations. In industrial control systems or network infrastructure where TEM FLEX-1085 devices are deployed, this vulnerability can result in extended downtime, production losses, and potential cascading failures within connected systems. The public disclosure of the exploit means that threat actors can readily implement this attack without requiring advanced technical skills, significantly increasing the attack surface and potential damage. Organizations utilizing this device must consider the vulnerability's implications for their overall security architecture, particularly in environments where system availability is mission-critical.
Mitigation strategies for CVE-2022-2591 should prioritize immediate firmware updates from the vendor, as this represents the most effective approach to resolving the underlying flaw. Network segmentation and access controls should be implemented to limit exposure of affected devices to untrusted networks, while monitoring systems should be configured to detect anomalous reboot patterns that might indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1499, which addresses denial of service attacks, and organizations should consider implementing defensive measures such as intrusion detection systems and network behavior analysis to identify and block exploitation attempts. Regular security assessments and vulnerability management processes should be enhanced to identify similar flaws in other firmware components, ensuring comprehensive protection against similar threats that may leverage similar attack vectors.