Critical (10.0) in vmware hyperic server. EPSS 0.9% chance of exploitation in the next 30 days.
A remote unauthenticated insecure deserialization vulnerability exists in VMware Hyperic Server 5.8.6. Exploitation of this vulnerability enables a malicious party to run arbitrary code or malware within Hyperic Server and the host operating system with the privileges of the Hyperic server process. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Severity
CVSS 3.1
10.0 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS
0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-31)