A race condition was addressed with additional validation.

published 2021-10-19 5y ago modified 2026-06-17 4mo ago also EUVD-2020-21983

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

A race condition was addressed with additional validation. This issue is fixed in Security Update 2021-005 Catalina. Mounting a maliciously crafted NFS network share may lead to arbitrary code execution with system privileges.

Patch / fix

fixed in 1

Apple Security Update - Catalina 2021

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Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	7.6	AV:N/AC:H/Au:N/C:C/I:C/A:C

Affected products

Apple Security Update - Catalina

Classification

Weakness

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

support.apple.com /en-us/HT212805
vendor-advisory

Sources

CVE List CVE-2020-29622
NVD CVE-2020-29622

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