CVE-2021-30851: Apple iOS and iPadOS

A memory corruption vulnerability was addressed with improved locking.

No CVSS scoreEPSS 0.024 · 84th percentile

Published by the CVE Program (CNA: apple) at 24 Aug 2021, 18:49 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	iOS and iPadOS	affected unspecified to before 15 custom
Apple	tvOS	affected unspecified to before 15 custom
Apple	Safari	affected unspecified to before 15 custom
Apple	watchOS	affected unspecified to before 8 custom

Identifiers

CVE-2021-30851

CNA

apple

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 0.024, the 84th percentile, on 8 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

support.apple.com/en-us/HT212814
support.apple.com/en-us/HT212819
support.apple.com/en-us/HT212815
support.apple.com/en-us/HT212816
support.apple.com/kb/HT212869 confirm
www.debian.org/security/2021/dsa-4995 vendor-advisorydebian
www.debian.org/security/2021/dsa-4996 vendor-advisorydebian
www.openwall.com/lists/oss-security/2021/10/31/1 mailing-listmlist
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/ vendor-advisoryfedora
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/ vendor-advisoryfedora

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.