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CVE record · CVE-2020-9859

Double free in Apple iOS and others

CVSS 7.8 HighCriticalIn CISA KEVEPSS 0.0083 · 57th percentile

Critical, because:

  • In CISA’s KEV catalogue since 3 Nov 2021: it is known to be exploited.

How we decide what’s critical

Published by the CVE Program (CNA: apple) at 5 Jun 2020, 14:40 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
VendorProductVersions
Apple iOS
  • affected unspecified to before iOS 13.5.1 and iPadOS 13.5.1 custom
Apple macOS
  • affected unspecified to before macOS Catalina 10.15.5 Supplemental Update custom
Apple tvOS
  • affected unspecified to before tvOS 13.4.6 custom
Apple watchOS
  • affected unspecified to before watchOS 6.2.6 custom
Identifiers
CVE-2020-9859
CNA
apple
Weakness (CWE)
CWE-415
Tags
Published
5 Jun 2020
Updated
21 Oct 2025

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

ScoreRatingCVSSVectorSource
7.8 High 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H ADP (CISA-ADP)
  • CISA KEV Listed since 3 Nov 2021: known to be exploited.
  • EPSS 0.0083, the 57th 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 5 Jun 2020. 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.