CVE-2020-7456

What it is

In FreeBSD 12.1-STABLE before r361918, 12.1-RELEASE before p6, 11.4-STABLE before r361919, 11.3-RELEASE before p10, and 11.4-RC2 before p1, an invalid memory location may be used for HID items if the push/pop level is not restored within the processing of that HID item allowing an attacker with physical access to a USB port to be able to use a specially crafted USB device to gain kernel or user-space code execution.

At a glance

Exploitability

Can be exploited with physical access without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.6% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2020-06-09 19:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:24 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.6% in the next 30 days (EPSS).
• Severity: 6.8 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-06-09 19:15 UTC

Last modified

2026-06-17 03:24 UTC

Exploit probability

0.6% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Freebsd 11.3
• Freebsd 11.4
• Freebsd 12.1
• Netapp Clustered Data Ontap

Attack profile CVSS 3.1 · 6.8

Attack vector

Physical

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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-2020-7456.md and follow it. Check whether this project is affected by CVE-2020-7456. 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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