Exploitation Summary
CVE-2020-9859 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021.
Description
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.
References (2)
Core 2
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/HT211214
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9859
Scores
CVSS v3
7.8
EPSS
0.0009
EPSS Percentile
26.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
active
Automatable
no
Technical Impact
total
Details
CISA KEV
2021-11-03
VulnCheck KEV
2021-11-03
InTheWild.io
2021-07-23
ENISA EUVD
EUVD-2020-30638
CWE
CWE-415
Status
published
Products (5)
apple/ipados
< 13.5.1
apple/iphone_os
< 13.5.1
apple/mac_os_x
< 10.15.5
apple/tvos
< 13.4.6
apple/watchos
< 6.2.6
Published
Jun 05, 2020
KEV Added
Nov 03, 2021
Tracked Since
Feb 18, 2026