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CVE-2020-24863

19
FAUCET Score

CVE-2020-24863 is a memory corruption vulnerability in the kern_getfsstat kernel function affecting MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4. An attacker can exploit this by providing a crafted size value and invalid mode, leading to an invalid free and system crash. Rated Medium severity (CVSS 5.5), this local attack requires low privileges and complexity, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.7CPE matchmatch criteria
cpe:2.3:a:midnightbsd:midnightbsd:*:*:*:*:*:*:*:*
>= 1.3, <= 2020-08-19CPE matchmatch criteria
cpe:2.3:a:midnightbsd:midnightbsd:*:*:*:*:*:*:*:*
<= 11.4CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 93rd percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c
ExploitThird Party Advisory
freebsd.org / security/advisories/FreeBSD-EN-20:18.getfsstat.asc
PatchVendor Advisory
midnightbsd.org / notes
Release NotesVendor Advisory
midnightbsd.org / security/adv/MIDNIGHTBSD-SA-20:01.txt
ExploitVendor Advisory