Answer in brief
CVE-2026-20643 records a Unknown severity vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Apple/iOS and iPadOS (generic), Apple/macOS (generic), Apple/Safari (generic), Apple/visionOS (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. The current sources do not mark it as known exploited. 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 and iPadOS (generic), Apple/macOS (generic), Apple/Safari (generic), Apple/visionOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Apple/iOS and iPadOSgeneric | >=0 <18.7.7 || >=0 <26.3.1 (a) || >=0 <26.4 | 18.7.7, 26.3.1 (a), 26.4 |
| Apple/macOSgeneric | >=0 <26.3.1 (a) || >=0 <26.3.2 (a) || >=0 <26.4 | 26.3.1 (a), 26.3.2 (a), 26.4 |
| Apple/Safarigeneric | >=0 <26.4 | 26.4 |
| Apple/visionOSgeneric | >=0 <26.4 | 26.4 |
Published upstream
Mar 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security Improvements for iOS, iPadOS, and macOS, Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may bypass Same Origin Policy.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-20643 records a Unknown severity vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Apple/iOS and iPadOS (generic), Apple/macOS (generic), Apple/Safari (generic), Apple/visionOS (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. The current sources do not mark it as known exploited. 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 and iPadOS (generic), Apple/macOS (generic), Apple/Safari (generic), Apple/visionOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Apple/iOS and iPadOSgeneric | >=0 <18.7.7 || >=0 <26.3.1 (a) || >=0 <26.4 | 18.7.7, 26.3.1 (a), 26.4 |
| Apple/macOSgeneric | >=0 <26.3.1 (a) || >=0 <26.3.2 (a) || >=0 <26.4 | 26.3.1 (a), 26.3.2 (a), 26.4 |
| Apple/Safarigeneric | >=0 <26.4 | 26.4 |
| Apple/visionOSgeneric | >=0 <26.4 | 26.4 |
Published upstream
Mar 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security Improvements for iOS, iPadOS, and macOS, Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may bypass Same Origin Policy.
Quoted source text, attributed separately from HOL analysis.