CVE-2020-7456

Name: CVE-2020-7456
Creator: NVD / NIST
Published: 2020-06-09T19:15:10.76+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2020-7456 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.8/10

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.56%

42.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Freebsd	Freebsd	11.3	—
Freebsd	Freebsd	11.4	Rc1
Freebsd	Freebsd	12.1	—
Netapp	Clustered Data Ontap	All versions	—

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:17.usb.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20200625-0005/Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:17.usb.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20200625-0005/Third Party Advisory

Timeline

Published: Jun 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7456?

How severe is CVE-2020-7456?

CVE-2020-7456 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7456?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7456?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST