CVE-2020-7452

Name: CVE-2020-7452
Creator: NVD / NIST
Published: 2020-04-29T00:15:12.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.83%

Last modified Jun 17, 2026

CVE-2020-7452 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. In FreeBSD 12.1-STABLE before r357490, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r357489, and 11.3-RELEASE before 11.3-RELEASE-p7, incorrect use of a user-controlled pointer in the epair virtual network module allowed vnet jailed privileged users to panic the host system and potentially execute arbitrary code in the kernel.. EPSS estimates a 1.83% chance of exploitation in the next 30 days.

Description

In FreeBSD 12.1-STABLE before r357490, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r357489, and 11.3-RELEASE before 11.3-RELEASE-p7, incorrect use of a user-controlled pointer in the epair virtual network module allowed vnet jailed privileged users to panic the host system and potentially execute arbitrary code in the kernel.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

1.83%

76.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Freebsd	Freebsd	11.3
Freebsd	Freebsd	12.1

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:07.epair.ascPatch, Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:07.epair.ascPatch, Vendor Advisory

Timeline

Published: Apr 29, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7452?

How severe is CVE-2020-7452?

CVE-2020-7452 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.83% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7452?

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-2020-7452?

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

Scan your code now

Source: NVD / NIST