CVE-2026-43776
Apple · iOS, iPadOS, macOS
A buffer overflow vulnerability in Apple operating systems may allow for arbitrary code execution when processing maliciously crafted files.
Executive summary
A critical buffer overflow vulnerability in Apple iOS, iPadOS, and macOS could allow an attacker to achieve arbitrary code execution through the processing of malicious files.
Vulnerability
The software contains a buffer overflow vulnerability that occurs during file processing. The attack requires user interaction, such as opening a malicious file, and is categorized as requiring local access.
Business impact
This vulnerability carries a CVSS score of 7.8, reflecting the potential for total impact on system confidentiality, integrity, and availability. Exploitation could lead to full system compromise, granting an attacker the ability to execute unauthorized code with the privileges of the logged-in user.
Remediation
Immediate Action: Apply the latest security updates provided by Apple for iOS, iPadOS, and macOS to address the underlying bounds checking issues.
Proactive Monitoring: Monitor system logs for unexpected application terminations or crashes that may indicate an exploitation attempt.
Compensating Controls: Exercise caution when opening files from untrusted sources and ensure that system-level security features are enabled to restrict unauthorized execution.
Exploitation status
Public Exploit Available: Unknown.
Analyst recommendation
Given the potential for arbitrary code execution, this update should be treated as a high priority. Organizations and individual users should verify that all Apple devices are updated to the patched versions immediately.