Answer in brief
CVE-2020-9859 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Apple/iOS (generic), Apple/macOS (generic), Apple/tvOS (generic), Apple/watchOS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Apple/iOS (generic), Apple/macOS (generic), Apple/tvOS (generic), Apple/watchOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Apple/iOSgeneric | >=unspecified <iOS 13.5.1 and iPadOS 13.5.1 | iOS 13.5.1 and iPadOS 13.5.1 |
| Apple/macOSgeneric | >=unspecified <macOS Catalina 10.15.5 Supplemental Update | macOS Catalina 10.15.5 Supplemental Update |
| Apple/tvOSgeneric | >=unspecified <tvOS 13.4.6 | tvOS 13.4.6 |
| Apple/watchOSgeneric | >=unspecified <watchOS 6.2.6 | watchOS 6.2.6 |
Published upstream
Jun 5, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Nov 3, 2021
Evidence: source:kev:kev:kev:recordA 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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2020-9859 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Apple/iOS (generic), Apple/macOS (generic), Apple/tvOS (generic), Apple/watchOS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Apple/iOS (generic), Apple/macOS (generic), Apple/tvOS (generic), Apple/watchOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Apple/iOSgeneric | >=unspecified <iOS 13.5.1 and iPadOS 13.5.1 | iOS 13.5.1 and iPadOS 13.5.1 |
| Apple/macOSgeneric | >=unspecified <macOS Catalina 10.15.5 Supplemental Update | macOS Catalina 10.15.5 Supplemental Update |
| Apple/tvOSgeneric | >=unspecified <tvOS 13.4.6 | tvOS 13.4.6 |
| Apple/watchOSgeneric | >=unspecified <watchOS 6.2.6 | watchOS 6.2.6 |
Published upstream
Jun 5, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Nov 3, 2021
Evidence: source:kev:kev:kev:recordA 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.
Quoted source text, attributed separately from HOL analysis.