CVE-2020-9951: Apple Safari

A use after free issue was addressed with improved memory management.

No CVSS scoreEPSS 0.023 · 83rd percentile

Published by the CVE Program (CNA: apple) at 16 Oct 2020, 16:53 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	Safari	affected unspecified to before Safari 14.0 custom

Identifiers

CVE-2020-9951

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 0.023, the 83rd percentile, on 9 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 16 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/HT211845
support.apple.com/kb/HT211952 confirm
seclists.org/fulldisclosure/2020/Nov/18 mailing-listfulldisc
seclists.org/fulldisclosure/2020/Nov/19 mailing-listfulldisc
seclists.org/fulldisclosure/2020/Nov/20 mailing-listfulldisc
seclists.org/fulldisclosure/2020/Nov/22 mailing-listfulldisc
www.openwall.com/lists/oss-security/2020/11/23/3 mailing-listmlist
www.debian.org/security/2020/dsa-4797 vendor-advisorydebian
support.apple.com/kb/HT211935 confirm
security.gentoo.org/glsa/202012-10 vendor-advisorygentoo

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.