A memory corruption issue was addressed with improved input validation.

published 2020-04-01 6y ago modified 2026-06-17 4mo ago also EUVD-2020-25158

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.4. A malicious application may be able to execute arbitrary code with kernel privileges.

Patch / fix

fixed in 1

Apple macOS macOS Catalina 10.15.4

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Exploit prediction

1.37% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

Apple macOS

Classification

Weakness

CWE-20 Improper Input Validation
CWE-787 Out-of-bounds Write

References

support.apple.com /HT211100
release-notes, vendor-advisory

Sources

CVE List CVE-2020-3893
NVD CVE-2020-3893

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