Insufficient Verification of Data Authenticity Affecting microcode_ctl package, versions <4:20260812-1.0.2.el9_8
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published3 Sept 2026
- disclosed11 Aug 2026
Introduced: 11 Aug 2026
CVE-2025-31356 (opens in a new tab)How to fix?
Upgrade Oracle:9 microcode_ctl to version 4:20260812-1.0.2.el9_8 or higher.
This issue was patched in ELSA-2026-500239.
NVD Description
Note: Versions mentioned in the description apply only to the upstream microcode_ctl package and not the microcode_ctl package as distributed by Oracle.
See How to fix? for Oracle:9 relevant fixed versions and status.
Insufficient verification of data authenticity for some Intel(R) Trust Domain Extensions (Intel(R) TDX) within Ring 0: Hypervisor may allow an information disclosure. A system software adversary with a privileged user access combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present without any user interaction. The potential vulnerability may impact the confidentiality (high), integrity (low) and no effect on availability. Subsequent system impacts include reduced confidentiality (low), integrity (low), and no effect on availability.