Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessSend repeated login requests
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DeliveryBypass missing rate limiting
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ExploitGuess valid credentials
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ExecutionAuthenticate as administrator
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ImpactAccess KVM console
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Brute-force prevention, rate limiting
|
| Exploitation Conditions | JetKVM versions before 0.5.4 with default configuration lacking login rate limiting. Network-accessible login interface required with no authentication bypass prerequisite. |
| Impact | The CVSS score of 7.5 (High) reflects a network-exploitable vulnerability with low attack complexity requiring no privileges or user interaction (AV:N/AC:L/PR:N/UI:N), though impact is limited to confidentiality (C:H/I:N/A:N). The attack vector allows remote exploitation over the network, and the low complexity means exploitation is straightforward once the device is network-accessible. Given that KVM devices are explicitly called out by Eclypsium as 'keys to your kingdom' hanging on the network, the real-world risk is substantial for organizations using these devices in production environments. The vulnerability enables credential compromise which can lead to complete infrastructure control beyond the initial confidentiality impact suggested by CVSS. CISA-CG involvement indicates government concern about this vulnerability class. With a patch available since version 0.5.4, organizations running older versions face immediate risk from automated scanning and credential stuffing attacks. The vulnerability is highly automatable, making it attractive for opportunistic attackers scanning for exposed KVM devices. |
| Exploit ScenarioDerived | An attacker discovers a JetKVM device exposed on the internet through network scanning tools like Shodan or direct reconnaissance. Using automated brute-force tools such as Hydra or custom scripts, the attacker launches a dictionary attack against the login interface, systematically trying common usernames and passwords without being throttled or blocked. After successfully guessing valid credentials (especially if default or weak passwords are in use), the attacker gains full KVM access to connected servers, allowing them to view screen output, control keyboard and mouse input, access BIOS settings, mount virtual media, and potentially deploy ransomware or establish persistent backdoors at the firmware level. |
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Alert meAnalysisAIv1 – Mar 17, 2026
JetKVM versions prior to 0.5.4 contain an authentication vulnerability that allows unlimited login attempts without rate limiting, enabling attackers to conduct brute-force attacks against user credentials. This affects KVM (Keyboard, Video, Mouse) over IP devices used for remote server management, potentially granting attackers administrative access to critical infrastructure. The vulnerability has been reported by CISA-CG and analyzed by security researchers at Eclypsium in their research on KVM device security risks.
RemediationAI
Upgrade JetKVM to version 0.5.4 or later immediately, as documented in the vendor release at https://github.com/jetkvm/kvm/releases/tag/release%2F0.5.4. Organizations should prioritize this update for any JetKVM devices exposed to untrusted networks or the internet. As an interim mitigation until patching is completed, restrict network access to JetKVM devices to trusted IP ranges using firewall rules or network segmentation, implement VPN-only access for remote management, and monitor authentication logs for signs of brute-force attempts (multiple failed login attempts from single sources). Consider implementing an external authentication proxy or reverse proxy with rate limiting capabilities in front of the device if immediate patching is not feasible. Given the critical nature of KVM device access, audit all JetKVM instances to ensure they are not directly exposed to the internet and verify strong credential policies are in place. Review the CISA CSAF advisory at https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-076-01.json for additional guidance.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
JetKVM is a KVM-over-IP solution that provides remote access to servers and infrastructure through network-connected hardware devices. The affected component is cpe:2.3:a:jetkvm:jetkvm, specifically the authentication mechanism in versions before 0.5.4. This vulnerability is classified as CWE-307 (Improper Restriction of Excessive Authentication Attempts), meaning the application fails to implement controls that prevent or throttle repeated login attempts. KVM devices are particularly sensitive as they provide direct console access equivalent to physical presence at a server, including BIOS/UEFI access and pre-boot environments. The absence of rate limiting on the login interface creates a fundamental authentication weakness that undermines the security model of these critical access control devices.
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
JetKVM before 0.5.4 does not rate limit login requests, enabling brute-force attempts to guess credentials.
Executive ViewAI
JetKVM installations are vulnerable to brute-force credential attacks due to missing login rate limiting, potentially allowing unauthorized access to critical infrastructure management interfaces. This poses a direct risk to organizations using JetKVM for remote server management, as compromised credentials could grant attackers persistent access to physical hardware controls.
Apply vendor patch.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
EUVD-2026-12608
NVD
CVE.org
EPSS
GitHub
VulDB
Exploit-DB