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Intel Xeon Scalable EUVDEUVD-2026-56472

| CVE-2026-20707 MEDIUM
Hardware Logic Contains Race Conditions (CWE-1298)
2026-08-11 intel GHSA-f6fv-42vr-3qvp
Denial Of Service Intel N A Suse 3Rd Gen Intel R Xeon R Scalable Processors
6.8
CVSS 4.0 · Vendor: intel
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Severity by source

Vendor (intel) PRIMARY
6.8 MEDIUM
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/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
vuln.today AI
5.6 MEDIUM

Local vector and low privileges per description; scope changed because hardware DoS can cascade to co-resident VMs sharing the physical processor.

3.1 AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
4.0 AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
SUSE
5.6 HIGH
AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

Primary rating from Vendor (intel).

CVSS VectorVendor: intel

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 11, 2026 - 21:58 vuln.today
CVE Published
Aug 11, 2026 - 16:25 cve.org
MEDIUM 6.8

DescriptionCVE.org

Hardware logic contains race conditions for some 3rd Gen Intel(R) Xeon(R) 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.

AnalysisAI

Hardware logic race conditions in 3rd Gen Intel Xeon Scalable Processors expose server environments to local denial of service. The flaw resides within Ring 3 (user-space) processor logic, where a low-privileged authenticated local user can exploit the race condition - provided they possess specialized internal knowledge of processor timing - to crash or destabilize the affected system. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in CISA KEV; however, the CVSS 4.0 score of 6.8 reflects the high availability impact across both the vulnerable system and any subsequent workloads sharing the hardware.

Technical ContextAI

CWE-1298 (Hardware Logic Contains Race Conditions) identifies flaws where processor or silicon-level logic is susceptible to race conditions that software cannot directly prevent or patch without a microcode or firmware update. Ring 3 in x86 architecture is the lowest privilege execution ring, where ordinary user-space applications run; a flaw exploitable from Ring 3 means standard unprivileged code - without kernel access - can trigger the hardware fault. The affected hardware is identified via CPE cpe:2.3:a:n/a:3rd_gen_intel(r)_xeon(r)_scalable_processors:*:*:*:*:*:*:*:*, corresponding to Ice Lake-SP microarchitecture (Xeon Scalable 3rd Gen), widely deployed in enterprise server and cloud infrastructure from approximately 2021 onward. The CVSS 4.0 vector (AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H) confirms local access, high attack complexity, low privileges, and high availability impact on both the vulnerable system and subsequent systems - suggesting the DoS can cascade to co-resident workloads such as virtual machines or containers on the same physical host.

RemediationAI

Consult Intel security advisory INTEL-SA-01443 (https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01443.html) as the authoritative remediation source; no exact microcode or firmware fix version is independently confirmed from the available data. For hardware-level race condition flaws of this class, remediation typically requires a processor microcode update distributed via platform firmware (BIOS/UEFI) or OS-level microcode loader (e.g., intel-microcode package on Linux). System administrators should check with their server OEM (Dell, HPE, Lenovo, Supermicro, etc.) for updated BIOS releases incorporating the Intel microcode patch. As a compensating control pending firmware updates, restricting access to vulnerable hosts by minimizing the number of low-privileged local users reduces exploitation surface - note that this does not eliminate the flaw but reduces who can attempt it. In multi-tenant or cloud environments where untrusted tenants have local access, prioritizing the microcode update is strongly recommended given the potential cross-workload DoS impact noted in SA:H.

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 12 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Micro 5.3 Affected
SUSE Linux Enterprise Micro 5.4 Affected

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EUVD-2026-56472 vulnerability details – vuln.today
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