Severity by source
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionCVE.org
JetKVM prior to 0.5.4 does not verify the authenticity of downloaded firmware files. An attacker-in-the-middle or a compromised update server could modify the firmware and the corresponding SHA256 hash to pass verification.
AnalysisAI
JetKVM versions prior to 0.5.4 lack cryptographic verification of firmware update authenticity, allowing attackers positioned on the network or controlling the update server to inject malicious firmware that bypasses hash validation. This enables local attackers with user interaction to compromise system integrity through a man-in-the-middle attack or server compromise. A patch is available to address this vulnerability.
Technical ContextAI
This vulnerability is classified as Insufficient Verification of Data Authenticity (CWE-345).
RemediationAI
A vendor patch is available. Apply it as soon as possible and verify the fix.
Same technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-12606