What is the CVSS score of CVE-2023-40540?

CVE-2023-40540 has a CVSS 3.1 base score of 4.4 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.2%.

Is there a patch available for CVE-2023-40540?

Yes, a patch is available for CVE-2023-40540. Update the affected software to the latest version immediately.

Nuc M15 Laptop Kit Lapbc510 Firmware CVE-2023-40540

MEDIUM

Non-Transparent Sharing of Microarchitectural Resources (CWE-1303)

2023-11-14 secure@intel.com

4.4

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-1303
Impact	CVSS score of 4.4 (MEDIUM). Attack characteristics: local attack vector, low complexity, high privileges required, no user interaction not required.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAI

Non-Transparent Sharing of Microarchitectural Resources in some Intel(R) NUC BIOS firmware may allow a privileged user to potentially enable information disclosure via local access. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-1303. Non-Transparent Sharing of Microarchitectural Resources in some Intel(R) NUC BIOS firmware may allow a privileged user to potentially enable information disclosure via local access. Affected products include: Intel Nuc 11 Pro Kit Nuc11Tnkv50Z Firmware, Intel Nuc 11 Pro Kit Nuc11Tnhv70L Firmware, Intel Nuc 11 Pro Kit Nuc11Tnhv50L Firmware, Intel Nuc 11 Pro Board Nuc11Tnbv7 Firmware, Intel Nuc 11 Pro Kit Nuc11Tnkv5 Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.4 MEDIUM

AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

DescriptionNVD

Non-Transparent Sharing of Microarchitectural Resources in some Intel(R) NUC BIOS firmware may allow a privileged user to potentially enable information disclosure via local access.

Threat Intelligence Overview

EPSS Score

0.2%

Top 89% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +22

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnkv50z_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnhv70l_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnhv50l_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_board_nuc11tnbv7_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnkv5_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnkv7_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnhv5_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_mini_pc_nuc11tnkv5_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_mini_pc_nuc11tnkv7_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnhv7_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_board_nuc11tnbv5_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_9_extreme_laptop_kit_lapqc71b_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_9_extreme_laptop_kit_lapqc71d_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_9_extreme_laptop_kit_lapqc71c_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_9_extreme_laptop_kit_lapqc71a_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_enthusiast_kit_nuc11phki7c_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_enthusiast_mini_pc_nuc11phki7caa_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnhi70z_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnki70z_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_11_pro_kit_nuc11tnki30z_firmware:-:*:*:*:*:*:*:*

+ 36 more

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References

Advisories & patches

PATCH https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01001.html

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

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