CRITICAL

CVE-2021-40531

CVSS v3

9.8

CRITICAL

EPSS Score

32.8 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-40531 yet.

Full record on NVD

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?

Is CVE-2021-40531 actively exploited?

Active exploitation of CVE-2021-40531 has not been confirmed. Its EPSS score was 32.8% on 2026-10-19, 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).

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