CVE-2023-40540

What it is

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.

At a glance

Exploitability

Can be exploited locally on the machine with an admin-level account. High risk of data exposure.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-11-14 19:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 06:18 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.2% in the next 30 days (EPSS).
• Severity: 4.1 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-11-14 19:15 UTC

Last modified

2026-06-17 06:18 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-1303

Record status

Modified

Affected

• 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
• Intel Nuc 11 Pro Kit nuc11tnkv7 Firmware
• Intel Nuc 11 Pro Kit nuc11tnhv5 Firmware
• Intel Nuc 11 Pro Mini Pc nuc11tnkv5 Firmware

Attack profile CVSS 3.1 · 4.1

Attack vector

Local

Complexity

High

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-40540.md and follow it. Check whether this project is affected by CVE-2023-40540. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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