Description
Improper access control for some Intel(R) Processors within Ring 3: User Applications may allow an escalation of privilege. Simple hardware adversary with an authenticated user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Affected products
intel: xeon 634 firmware; intel: xeon 634; intel: xeon 636 firmware; intel: xeon 636; intel: xeon 638 firmware; intel: xeon 638; intel: xeon 654 firmware; intel: xeon 654; intel: xeon 656 firmware; intel: xeon 656; intel: xeon 658x firmware; intel: xeon 658x; intel: xeon 674x firmware; intel: xeon 674x; intel: xeon 676x firmware
References1
- intel.com/content/www/us/en/security-center/advisory/intel-sa-0… Vendor Advisory
Metrics
- CVSS 3.1
-
7.0
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
7.2
HIGH
Score source: CNA
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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 - EPSS — exploit probability
- 0% percentile: 0 · as of 12 November 2026
- CWE
- CWE-284
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