CVE-2005-0109: Hyper-Threading technology, as used in FreeBSD and other operating systems that are run on Intel Pentium an...

Security readout for executives and security teams

This CVE describes a hardware side-channel risk in Hyper-Threading. A local user on the same physical processor could infer sensitive activity from another thread, potentially including cryptographic key material. It is not a remote internet exploit, but it matters for shared, multi-user, or high-sensitivity systems. Exposure is most plausible on older systems using Intel Hyper-Threading with local untrusted users, shell access, shared hosting, or mixed-trust workloads. Single-user systems and systems without Hyper-Threading are less likely exposed. Treat this as a legacy shared-system risk. It is unlikely to drive emergency internet-facing response, but it should be reviewed where older multi-user infrastructure handles credentials, keys, or regulated data. Mitigation focus: Check applicable vendor advisories for supported updates or configuration guidance.; Disable Hyper-Threading where vendor guidance recommends it for sensitive shared systems.; Avoid co-locating untrusted users or workloads with cryptographic operations on affected hardware..

Prepared

Jun 29, 2026, 23:41 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.