CVE-2021-1871

high-risk
Published 2021-04-02

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Do I need to act?

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0.79% chance of exploitation
EPSS score — low exploit probability
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (9)

Affected Vendors

Debian Apple Fedoraproject

References (9)

Broken Link https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Release Notes https://support.apple.com/en-us/HT212146
Release Notes https://support.apple.com/en-us/HT212147
Mailing List https://www.debian.org/security/2021/dsa-4923
Broken Link https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Release Notes https://support.apple.com/en-us/HT212146
Release Notes https://support.apple.com/en-us/HT212147
Mailing List https://www.debian.org/security/2021/dsa-4923
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
57
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 10/34 · Low
Exposure 15/34 · Moderate