CVE record · CVE-2021-30939

An out-of-bounds read was addressed with improved bounds checking.

No CVSS scoreEPSS 0.041 · 90th percentile

Published by the CVE Program (CNA: apple) at 24 Aug 2021, 18:50 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Apple	watchOS	affected unspecified to before 8.3 custom
Apple	iOS and iPadOS	affected unspecified to before 15.2 custom
Apple	macOS	affected unspecified to before 12.1 custom
Apple	macOS	affected unspecified to before 11.6 custom
Apple	macOS	affected unspecified to before 15.2 custom
Apple	macOS	affected unspecified to before 2021 custom

Identifiers: CVE-2021-30939
CNA: apple
Tags: Apple watchOS
Apple iOS and iPadOS
Apple macOS
Published: 24 Aug 2021
Updated: 3 Aug 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

CISA KEV Not listed.
EPSS 0.041, the 90th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 24 Aug 2021. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.