Vulnerability · CVE-2020-9859
Apple Multiple Products Code Execution Vulnerability
Published Jun 5, 2020 · catalog updated Jun 16, 2026 · Apple Multiple Products
Patch now
CVE-2020-9859 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Apple Multiple Products against the vendor advisory and apply that fix. The CVSS score does not change the priority.
Gaps on this record
- No version range is stored. A customer cannot check an installed version against this record.
- Severity
- High7.8
- Known exploitation
- CISA KEV and VulnCheck KEV
- EPSS
- 0.83%
- Remediation
- Remediation guidance
- Affected products
- cpe apple/ipados · cpe apple/iphone os · cpe apple/mac os x · cpe apple/tvos · cpe apple/watchos · vendor Apple Multiple Products
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe apple/ipadosversion unspecified
- cpe apple/iphone osversion unspecified
- cpe apple/mac os xversion unspecified
- cpe apple/tvosversion unspecified
- cpe apple/watchosversion unspecified
- vendor Apple Multiple Productsversion unspecified
How to fix CVE-2020-9859
Recommended remediation
Apply updates per vendor instructions. CISA due date May 3, 2022.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2020-9859 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Apple Multiple Products against the vendor advisory and apply that fix. The CVSS score does not change the priority.
Which versions are affected?
Affected version ranges are not on this record. Apply updates per vendor instructions.
What should an analyst verify?
CWE-415: Double Free. EPSS 0.83%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jun 5, 2020 · Catalog
Detected
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.
Nov 3, 2021 · CISA KEV
Known exploited
Apply updates per vendor instructions.
May 3, 2022 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Jun 16, 2026 · Catalog
Updated
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.
Sources
- CISA KEVConfirmed exploitationCVE-2020-9859
Apple iOS, iPadOS, macOS, watchOS, and tvOS contain an unspecified vulnerability that may allow an application to execute code with kernel privileges.
cisa.gov - CVE.orgVulnerability recordCVE-2020-9859
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2020-9859
30-day exploitation probability 0.8%
first.org - NIST NVDVulnerability recordCVE-2020-9859
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.
nvd.nist.gov - VulnCheck KEVConfirmed exploitationCVE-2020-9859
Apple iOS, iPadOS, macOS, watchOS, and tvOS contain an unspecified vulnerability that may allow an application to execute code with kernel privileges.
vulncheck.com
References
Freshness
Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.