CVE-2026-43666: An attacker on the local network may be able to cause a denial-of-service in Apple iOS and iPadOS
CVE-2026-43666 is an out-of-bounds write vulnerability affecting Apple iOS and iPadOS, which could allow an attacker on the local network to cause a denial-of-service condition. The issue has been addressed by Apple through improved bounds checking and fixed in multiple Apple operating system versions including iOS 18. 7. 9, iPadOS 18. 7. 9, and others. No CVSS score is available for this vulnerability. There is no indication of known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write in Apple iOS and iPadOS that could be triggered by an attacker on the local network to cause a denial-of-service. Apple has fixed the issue by improving bounds checking in iOS 18.7.9, iPadOS 18.7.9, and corresponding versions of macOS, tvOS, visionOS, and watchOS. The vulnerability is publicly disclosed but lacks a CVSS score and detailed technical exploitation information.
Potential Impact
An attacker on the local network may cause a denial-of-service on affected Apple devices by exploiting this out-of-bounds write vulnerability. There is no evidence of remote code execution or data compromise. No known exploits are reported in the wild.
Mitigation Recommendations
A fix is available in Apple operating system updates iOS 18.7.9, iPadOS 18.7.9, and related OS versions. Users and administrators should apply these updates to remediate the vulnerability. Since this is not a cloud service, patching the affected devices is required to mitigate the risk.
CVE-2026-43666: An attacker on the local network may be able to cause a denial-of-service in Apple iOS and iPadOS
Description
CVE-2026-43666 is an out-of-bounds write vulnerability affecting Apple iOS and iPadOS, which could allow an attacker on the local network to cause a denial-of-service condition. The issue has been addressed by Apple through improved bounds checking and fixed in multiple Apple operating system versions including iOS 18. 7. 9, iPadOS 18. 7. 9, and others. No CVSS score is available for this vulnerability. There is no indication of known exploits in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds write in Apple iOS and iPadOS that could be triggered by an attacker on the local network to cause a denial-of-service. Apple has fixed the issue by improving bounds checking in iOS 18.7.9, iPadOS 18.7.9, and corresponding versions of macOS, tvOS, visionOS, and watchOS. The vulnerability is publicly disclosed but lacks a CVSS score and detailed technical exploitation information.
Potential Impact
An attacker on the local network may cause a denial-of-service on affected Apple devices by exploiting this out-of-bounds write vulnerability. There is no evidence of remote code execution or data compromise. No known exploits are reported in the wild.
Mitigation Recommendations
A fix is available in Apple operating system updates iOS 18.7.9, iPadOS 18.7.9, and related OS versions. Users and administrators should apply these updates to remediate the vulnerability. Since this is not a cloud service, patching the affected devices is required to mitigate the risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.640Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a028769cbff5d86108b6e1e
Added to database: 5/12/2026, 1:50:33 AM
Last enriched: 5/12/2026, 2:07:33 AM
Last updated: 5/12/2026, 2:54:11 AM
Views: 2
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