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Intel Xeon Processors CVE-2026-20901

| EUVDEUVD-2026-56788 MEDIUM
Improper Input Validation (CWE-20)
2026-08-11 secure@intel.com GHSA-j38j-4xcw-8784
Intel Privilege Escalation Xeon Bronze 3408U Firmware Xeon Gold 5403N Firmware Xeon Gold 5411N Firmware Xeon Gold 5412U Firmware Xeon Gold 5415 Firmware Xeon Platinum 8592 Firmware Xeon Platinum 8592V Firmware Xeon Platinum 8593Q Firmware Xeon Silver 4509Y Firmware Xeon Silver 4510 Firmware Xeon Silver 4510T Firmware Xeon Silver 4514Y Firmware Xeon Silver 4516Y Firmware Xeon Gold 5416S Firmware Xeon Gold 5418N Firmware Xeon Gold 5418Y Firmware Xeon Gold 5420 Firmware Xeon Gold 5423N Firmware Xeon Gold 5433N Firmware Xeon Gold 6403N Firmware Xeon Gold 6414U Firmware Xeon Gold 6416H Firmware Xeon Gold 6418H Firmware Xeon Gold 6421N Firmware Xeon Gold 6423N Firmware Xeon Gold 6426Y Firmware Xeon Gold 6428N Firmware Xeon Gold 6430 Firmware Xeon Gold 6433N Firmware Xeon Gold 6433Ne Firmware Xeon Gold 6434 Firmware Xeon Gold 6434H Firmware Xeon Gold 6438M Firmware Xeon Gold 6438N Firmware Xeon Gold 6438Y Firmware Xeon Gold 6442Y Firmware Xeon Gold 6443N Firmware Xeon Gold 6444Y Firmware Xeon Gold 6448H Firmware Xeon Gold 6448Y Firmware Xeon Gold 6454S Firmware Xeon Gold 6458Q Firmware Xeon Platinum 8444H Firmware Xeon Platinum 8450H Firmware Xeon Platinum 8452Y Firmware Xeon Platinum 8454H Firmware Xeon Platinum 8458P Firmware Xeon Platinum 8460H Firmware Xeon Platinum 8460Y Firmware Xeon Platinum 8461V Firmware Xeon Platinum 8462Y Firmware Xeon Platinum 8468 Firmware Xeon Platinum 8468H Firmware Xeon Platinum 8468V Firmware Xeon Platinum 8470 Firmware Xeon Platinum 8470N Firmware Xeon Platinum 8470Q Firmware Xeon Platinum 8471N Firmware Xeon Platinum 8480 Firmware Xeon Platinum 8490H Firmware Xeon Silver 4410T Firmware Xeon Silver 4410Y Firmware Xeon Silver 4416 Firmware Xeon Bronze 3508U Firmware Xeon Gold 5512U Firmware Xeon Gold 5515 Firmware Xeon Gold 5520 Firmware Xeon Gold 6526Y Firmware Xeon Gold 6530 Firmware Xeon Gold 6534 Firmware Xeon Gold 6538N Firmware Xeon Gold 6538Y Firmware Xeon Gold 6542Y Firmware Xeon Gold 6544Y Firmware Xeon Gold 6548N Firmware Xeon Gold 6548Y Firmware Xeon Gold 6554S Firmware Xeon Gold 6558Q Firmware Xeon Platinum 8558 Firmware Xeon Platinum 8558P Firmware Xeon Platinum 8558U Firmware Xeon Platinum 8562Y Firmware Xeon Platinum 8568Y Firmware Xeon Platinum 8570 Firmware Xeon Platinum 8571N Firmware Xeon Platinum 8580 Firmware Xeon Platinum 8581V Firmware Xeon Bronze 3408U Xeon Gold 5411N Xeon Gold 5412U Xeon Gold 5415 Xeon Gold 5416S Xeon Gold 5418N Xeon Gold 5418Y Xeon Gold 5420 Xeon Gold 6414U Xeon Gold 6416H Xeon Gold 6418H Xeon Gold 6421N Xeon Gold 6426Y Xeon Gold 6428N Xeon Gold 6430 Xeon Gold 6434 Xeon Gold 6434H Xeon Gold 6438M Xeon Gold 6438N Xeon Gold 6438Y Xeon Gold 6442Y Xeon Gold 6444Y Xeon Gold 6448H Xeon Gold 6448Y Xeon Gold 6454S Xeon Gold 6458Q Xeon Platinum 8444H Xeon Platinum 8450H Xeon Platinum 8452Y Xeon Platinum 8454H Xeon Platinum 8458P Xeon Platinum 8460H Xeon Platinum 8460Y Xeon Platinum 8461V Xeon Platinum 8462Y Xeon Platinum 8468 Xeon Platinum 8468H Xeon Platinum 8468V Xeon Platinum 8470 Xeon Platinum 8470N Xeon Platinum 8470Q Xeon Platinum 8471N Xeon Platinum 8480 Xeon Platinum 8490H Xeon Silver 4410T Xeon Silver 4410Y Xeon Silver 4416 Suse
4.0
CVSS 4.0 · Vendor: intel
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Severity by source

Vendor (intel) PRIMARY
4.0 MEDIUM
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/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
5.3 MEDIUM

Local-only access and high privileges required; scope changed because integrity impact falls on subsequent system components (SMM or firmware state), not the vulnerable system itself.

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

Primary rating from Vendor (intel).

CVSS VectorVendor: intel

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

Lifecycle Timeline

2
Analysis Generated
Aug 11, 2026 - 22:51 vuln.today
CVE Published
Aug 11, 2026 - 18:17 cve.org
MEDIUM 4.0

DescriptionCVE.org

Improper input validation for some Intel(R) Xeon(R) 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.

AnalysisAI

Firmware improper input validation in Intel Xeon processors enables a highly privileged local adversary operating within System Management Mode (SMM) or startup code context to alter the integrity of subsequent system components. The CVSS 4.0 vector confirms local-only access (AV:L), high complexity (AC:H), presence-required attack conditions (AT:P), and a high-privilege prerequisite (PR:H), with zero confidentiality or availability impact - only downstream integrity degradation (SI:H). …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Exploitation requires simultaneous satisfaction of all four constraints from the CVSS 4.0 vector. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 4.0 (Medium) accurately reflects a heavily constrained attack profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary remediation is to apply the firmware update specified in Intel Security Advisory INTEL-SA-01442 at https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01442.html; the exact patched firmware version is not independently confirmed from available data and must be obtained directly from the advisory or from the system OEM (Dell, HPE, Lenovo, Supermicro, etc.), as OEMs package Intel microcode updates into platform-specific BIOS/UEFI releases. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-20 – Improper Input Validation

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Same technique Privilege Escalation

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Affected
SUSE Linux Enterprise Micro 5.3 Affected

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CVE-2026-20901 vulnerability details – vuln.today
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