CVE-2020-24863

A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD...

5.5 Medium

A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4, that allows an attacker to trigger an invalid free and crash the system via a crafted size value in conjunction with an invalid mode.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.53%Down 0.3 points since Apr 14, 2021

What each source reports

NVD Score used 5.5

Record: CVE-2020-24863
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 4.9 MediumAV:L/AC:L/Au:N/C:N/I:N/A:C
Weakness: CWE-787
Updated: 2026-11-02

CVE List No score

Record: CVE-2020-24863
Updated: 2026-11-02

EUVDEUVD-2020-17571 No score

Record: EUVD-2020-17571
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qjw3-35px-c96q No score

A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD...

Record: GHSA-qjw3-35px-c96q
Updated: 2026-11-02

OSV 5.5

Record: CVE-2020-24863
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-24863 is a medium vulnerability (CVSS 5.5) in Freebsd, published September 3, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.53%, the 45th percentile. No source names a fixed version.