A buffer overflow was addressed with improved bounds checking. (CVE-2026-43807)
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious accessory may be able to cause unexpected app termination.
AI Analysis
Technical Summary
CVE-2026-43807 is a buffer overflow vulnerability categorized under CWE-120 that was mitigated by improved bounds checking. It affects several Apple OS versions and could be exploited by a malicious accessory to cause unexpected app termination. The vulnerability has a CVSS 3.1 vector indicating network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. Official fixes are available in the specified OS versions.
Potential Impact
A malicious accessory could exploit this buffer overflow to cause unexpected termination of applications, potentially leading to denial of service and compromise of confidentiality, integrity, and availability of affected systems. The CVSS score indicates critical severity with high impact on all security properties.
Mitigation Recommendations
This vulnerability is fixed in iOS 26.5.2, iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, and watchOS 26.6. Users and administrators should apply these official updates to remediate the issue.
A buffer overflow was addressed with improved bounds checking. (CVE-2026-43807)
Description
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious accessory may be able to cause unexpected app termination.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43807 is a buffer overflow vulnerability categorized under CWE-120 that was mitigated by improved bounds checking. It affects several Apple OS versions and could be exploited by a malicious accessory to cause unexpected app termination. The vulnerability has a CVSS 3.1 vector indicating network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. Official fixes are available in the specified OS versions.
Potential Impact
A malicious accessory could exploit this buffer overflow to cause unexpected termination of applications, potentially leading to denial of service and compromise of confidentiality, integrity, and availability of affected systems. The CVSS score indicates critical severity with high impact on all security properties.
Mitigation Recommendations
This vulnerability is fixed in iOS 26.5.2, iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, and watchOS 26.6. Users and administrators should apply these official updates to remediate the issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-h8v4-p36p-9mwj
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-43807"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a6941fe9c2644c7f86cdd95
Added to database: 07/28/2026, 23:57:50 UTC
Last enriched: 07/29/2026, 11:08:59 UTC
Last updated: 09/12/2026, 10:01:31 UTC
Views: 103
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