CVE-2024-6863: medium-severity vulnerability in h2oai/h2o-3
Encryption of Arbitrary Files with Attacker-Controlled Key in h2oai/h2o-3
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.4%
In h2oai/h2o-3 version 3.46.0, an endpoint exposing a custom EncryptionTool allows an attacker to encrypt any files on the target server with a key of their choosing. The chosen key can also be overwritten, resulting in ransomware-like behavior. This vulnerability makes it possible for an attacker to encrypt arbitrary files with keys of their choice, making it exceedingly difficult for the target to recover the keys needed for decryption.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Affected products
h2oai · h2oai/h2o-3Related CVEs — h2oai/h2o-3
In the same product, most dangerous first.
CVE-2023-6016CRITICALH2O Remote Code Execution via POJO Model ImportEPSS 30.6%CVE-2025-6507CRITICALDeserialization of Untrusted Data in h2oai/h2o-3EPSS 17.3%CVE-2023-6038CRITICALLocal File Inclusion in h2oai/h2o-3EPSS 4.3%CVE-2024-10553CRITICALJdbc Deserialization in h2oai/h2o-3EPSS 1.6%CVE-2025-6544CRITICALDeserialization Vulnerability in h2oai/h2o-3EPSS 1.0%CVE-2026-3960MEDIUMRemote Code Execution in h2oai/h2o-3EPSS 0.9%