CVE-2020-9876: Apple iOS

An out-of-bounds write issue was addressed with improved bounds checking.

No CVSS scoreEPSS 0.020 · 80th percentile

Published by the CVE Program (CNA: apple) at 22 Oct 2020, 17:58 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	affected unspecified to before iOS 13.6 and iPadOS 13.6 custom
Apple	macOS	affected unspecified to before macOS Catalina 10.15.6 custom
Apple	tvOS	affected unspecified to before tvOS 13.4.8 custom
Apple	watchOS	affected unspecified to before watchOS 6.2.8 custom
Apple	iTunes for Windows	affected unspecified to before iTunes 12.10.8 for Windows custom
Apple	iCloud for Windows	affected unspecified to before iCloud for Windows 11.3 custom
Apple	iCloud for Windows (Legacy)	affected unspecified to before iCloud for Windows 7.20 custom

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 0.020, the 80th percentile, on 5 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 22 Oct 2020. New records show when each source confirmed them.

Sources

References from the CNA

support.apple.com/kb/HT211843 confirm
support.apple.com/kb/HT211850 confirm
support.apple.com/kb/HT211844 confirm
support.apple.com/kb/HT211289
support.apple.com/kb/HT211288
support.apple.com/kb/HT211290
support.apple.com/kb/HT211291
support.apple.com/kb/HT211293
support.apple.com/kb/HT211294
support.apple.com/kb/HT211295
support.apple.com/kb/HT211931 confirm
support.apple.com/kb/HT211952 confirm
seclists.org/fulldisclosure/2020/Nov/19 mailing-listfulldisc
seclists.org/fulldisclosure/2020/Nov/20 mailing-listfulldisc
seclists.org/fulldisclosure/2020/Nov/22 mailing-listfulldisc
support.apple.com/kb/HT211935 confirm
seclists.org/fulldisclosure/2020/Dec/32 mailing-listfulldisc

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.