Answer in brief
CVE-2026-20657 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/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/visionOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Apple/iOS and iPadOSgeneric | >=0 <18.7.7 || >=0 <26.4 | 18.7.7, 26.4 |
| Apple/macOSgeneric | >=0 <14.8.5 || >=0 <15.7.5 || >=0 <26.4 | 14.8.5, 15.7.5, 26.4 |
| Apple/visionOSgeneric | >=0 <26.4 | 26.4 |
Published upstream
Mar 25, 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 buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. Parsing a maliciously crafted file may lead to an unexpected app termination.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-20657 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/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/visionOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Apple/iOS and iPadOSgeneric | >=0 <18.7.7 || >=0 <26.4 | 18.7.7, 26.4 |
| Apple/macOSgeneric | >=0 <14.8.5 || >=0 <15.7.5 || >=0 <26.4 | 14.8.5, 15.7.5, 26.4 |
| Apple/visionOSgeneric | >=0 <26.4 | 26.4 |
Published upstream
Mar 25, 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 buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. Parsing a maliciously crafted file may lead to an unexpected app termination.
Quoted source text, attributed separately from HOL analysis.