CVE-2026-43688
Apple · iOS, iPadOS, and macOS
A memory corruption vulnerability in Apple iOS, iPadOS, and macOS allows for potential application termination when processing maliciously crafted files.
Executive summary
A memory corruption vulnerability in Apple operating systems poses a high security risk by allowing malicious file processing to trigger application termination and potential system compromise.
Vulnerability
The vulnerability is a memory corruption flaw caused by improper input validation, which can be triggered when a user processes a maliciously crafted file. Based on the CVSS vector (AV:L/PR:N/UI:R), this requires a local user to interact with the malicious file to trigger the issue.
Business impact
While the primary symptom is unexpected application termination, memory corruption vulnerabilities often serve as primitives for more severe attacks, including arbitrary code execution. The CVSS score of 7.8 indicates a high severity, reflecting the potential for significant impact on system integrity and availability. Organizations relying on these platforms for critical business operations face potential disruption if these systems are targeted by malicious files.
Remediation
Immediate Action: Update all affected Apple iOS, iPadOS, and macOS devices to version 27 or later to implement the vendor provided input validation fixes.
Proactive Monitoring: Monitor system logs for frequent, unexplained application crashes or abnormal termination events that may indicate attempts to trigger this vulnerability.
Compensating Controls: Enforce strict email and file transfer security policies to prevent users from opening untrusted or unsolicited files, which serves as a primary vector for this vulnerability.
Exploitation status
Public Exploit Available: No
Analyst recommendation
Given the high CVSS score and the critical nature of memory corruption flaws, organizations should prioritize patching affected Apple devices. System administrators must ensure that all devices across the enterprise are updated to version 27 promptly to neutralize the risk of exploitation.
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History
CVE Brief tracked this CVE 2 days before it had a CVSS score.
- Disclosed CVE record published
- Collected by CVE Brief No CVSS score yet; tracked as early warning
- CVSS score assigned 7.8 (3.1)
- Analyst report written