CVE-2021-40531
CVSS v3
9.8
CRITICAL
EPSS Score
32.8 %
exploit probability, as of 2026-10-04
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Sketch before 75 allows library feeds to be used to bypass file quarantine. Files are automatically downloaded and opened, without the com.apple.quarantine extended attribute. This results in remote code execution, as demonstrated by CommandString in a terminal profile to Terminal.app.
Technical details
- Published
- 2021-09-06
Frequently asked questions
What is CVE-2021-40531?
Sketch before 75 allows library feeds to be used to bypass file quarantine. Files are automatically downloaded and opened, without the com.apple.quarantine extended attribute. This results in remote code execution, as demonstrated by CommandString in a terminal profile to Terminal.app.
Is CVE-2021-40531 actively exploited?
Active exploitation of CVE-2021-40531 has not been confirmed. Its EPSS score was 32.8% on 2026-10-04, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-40531?
CVE-2021-40531 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-40531 affecting your environment?
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