Security Advisory: Security Update Regarding Intel Processor Vulnerability (2026.3 IPU)
SA: Aivres-SA-202611001
Initial Release: 11/06/2026
Source: Intel Security Bulletin
Potential Security Impact: Information Disclosure, Denial of Service
Vulnerability Summary:
| CVE | CVE Description |
| CVE-2026-20707 | Hardware logic contains race conditions for some 3rd Gen Intel® Xeon® Scalable Processors within Ring 3: unprivileged software may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a high complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (high) impacts. |
| CVE-2026-20713 | Always-incorrect control flow implementation in some firmware for some Intel® Xeon® processors may allow an escalation of privilege. System software adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts. |
| CVE-2026-20901 | Improper input validation for some Intel® Xeon® processors within firmware may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable data alteration. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (high) and availability (none) impacts. |
| CVE-2026-20898 | Improper access control in the firmware for some in Alias Checking Trusted Module for some Intel® Xeon® processors may allow an escalation of privilege. Startup code and SMM adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are not present without 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 (high), integrity (high) and availability (none) impacts. |
| CVE-2026-20712 | Incomplete cleanup in some UEFI firmware for some Intel® reference platforms within UEFI may allow an information disclosure. System software adversary with a privileged user combined with a low complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts. |
CVSS Score:
| CVE | CVSS Base Score | CVSS Vector |
| CVE-2026-20707 | 6.8 | CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H |
| CVE-2026-20713 | 4.5 | CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N |
| CVE-2026-20901 | 4 | CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N |
| CVE-2026-20898 | 8.5 | CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N |
| CVE-2026-20712 | 4 | CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N |
Fixed Product Version:
| Product | BIOS Update Version |
| KR1280V2 | KR1280X2_BIOS_06.11.00 |
| KR2280V2 | KR2280X2_BIOS_06.11.00 |
| KR4266V2 | KR4266X2_BIOS_06.11.00 |
| KR4268V2 | KR4268X2_BIOS_06.11.00 |
| KR4276V2 | KR4276X2_BIOS_06.11.00 |
Resolution:
Download the BIOS fix for your specific product model, perform the BIOS update, and restart the system for the changes to take effect.
Product Resource Center: https://resource.aivres.com/eportal/ui?pageId=2490734
Revision History:
Version 1 – Oct 26, 2026 Initial release
Reference links:
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01443.html
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01442.html
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01439.html
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01437.html
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