Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L L N U H H H 7.8 .0083 56.1 YES
AFFECTED Product Versions Fixed iOS unspecified – — macOS unspecified – — tvOS unspecified – — watchOS unspecified – —
TIMELINE Mar 2 Reserved by apple Jun 5 Published (CNA: apple) Nov 3 Added to CISA KEV, remediation due 2022-05-03
A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6, watchOS 6.2.6. An application may be able to execute arbitrary code with kernel privileges.
| Date | Event | Detail |
|---|---|---|
| March 2, 2020 | Reserved | Reserved by apple |
| June 5, 2020 | Published | Published (CNA: apple) |
| November 3, 2021 | KEV ADDED | Added to CISA KEV, remediation due 2022-05-03 |
Authoritative record: CVE-2020-9859 at cve.org
Vendors: apple
Weaknesses: CWE-415
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-9859 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
