Apple iOS and macOS Foundation Framework Memory Corruption Local Privilege Escalation Vulnerability (CVE-2019-7286) Analysis and Mitigation Guide
Executive & SecOps Summary
SECOPS ASSESSMENTApple iOS devices prior to version 12.1.4 and macOS Mojave systems prior to 10.14.3 Supplemental Update
A local application can exploit a memory corruption vulnerability to bypass sandboxing and gain elevated system privileges
Immediately apply the official security patches (iOS 12.1.4, macOS 10.14.3 Supplemental Update, or later)
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
Apply the official security updates provided by Apple. In enterprise environments, administrators can force software updates via MDM or command-line utilities.
# Check and install all available macOS software updates and restart automatically
sudo softwareupdate -i -a --restart2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, restrict the execution of unsigned or untrusted third-party applications. Enforce strict Gatekeeper policies on macOS.
# Enable Gatekeeper to restrict execution to identified developers only
sudo spctl --master-enable
sudo spctl --status3. Log Audit & IoC Verification Commands
Use the following script to audit the current macOS version and verify if the system requires immediate patching.
# Script to check current macOS version and build details
current_ver=$(sw_vers -productVersion)
current_build=$(sw_vers -buildVersion)
echo 'Detected macOS Version:' $current_ver
echo 'Detected Build Version:' $current_build
# Simple check for Mojave 10.14.3 vulnerability status
if [[ '$current_ver' == '10.14.3' ]]; then
echo '[ALERT] Action required: Verify if Supplemental Update is installed.'
fiBlock Kernel Privilege Escalation & Ransomware Payloads Before You Can Reboot
Protect unpatched Windows, Linux, and macOS workloads against in-memory exploitation and lateral movement with autonomous EDR.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2019-7286) is a critical memory corruption issue (CWE-787) residing within the Foundation framework of Apple operating systems. The root cause is insufficient input validation when processing serialized data or user-supplied inputs. This lack of validation allows an attacker to trigger an out-of-bounds write, corrupting critical memory structures in the system process context.
2. Exploitation Mechanics & Attack Scenario
An attacker with local access or running a low-privileged application can craft malicious inputs targeting the vulnerable Foundation APIs. By corrupting the heap memory layout, the exploit hijacks the control flow of the executing process. This enables the attacker to escape the application sandbox and execute arbitrary code with elevated system-level privileges, effectively compromising the entire operating system kernel or root context. This vulnerability has been actively exploited in the wild.
3. Infrastructure & Business Impact
Successful exploitation allows complete compromise of macOS workstations and iOS mobile devices used within the enterprise. Attackers can bypass Mobile Device Management (MDM) controls, access sensitive corporate data, extract credentials from the keychain, and establish persistent access within the corporate network, posing a severe threat to enterprise security posture.
Official Vendor Advisories & References
A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 12.1.4, macOS Mojave 10.14.3 Supplemental Update. An application may be able to gain elevated privileges.
Frequently Asked SecOps Questions (CVE-2019-7286)
FAQQ1. How critical is CVE-2019-7286 and is it actively exploited in the wild?
CVE-2019-7286 is rated CVSS 7.8 (HIGH) with a 30-day EPSS exploitation probability of 15.9%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2019-7286?
Primary impacted vendors include apple across ios, macos, watchos, tvos. Scope summary: iOS versions prior to 12.1.4, macOS Mojave versions prior to 10.14.3 Supplemental Update, watchOS prior to 5.1.3, and tvOS prior to 12.1.2
Q3. What temporary mitigations or workarounds exist for CVE-2019-7286 before patching?
[Mitigation] Immediately apply the official security patches (iOS 12.1.4, macOS 10.14.3 Supplemental Update, or later) Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
Generate an Internal Engineering Notice or CISO Report for CVE-2019-7286
Instantly format this advisory into an executive CISO summary or engineering patch ticket.
🔗 Related Advisories in Similar Stack (apple)
View Category →Apple iOS, macOS, and watchOS Memory Corruption Arbitrary Code Execution Vulnerability (CVE-2026-20700)
[Affected Scope] Apple devices running iOS before 26.3, iPadOS before 26.3, macOS Tahoe before 26.3, tvOS before 26.3, visionOS before 26.3, and watchOS before 26.3
Apple iOS and macOS Out-of-bounds Write Remote Code Execution Vulnerability (CVE-2026-86950) Security Advisory
[Affected Scope] All Apple devices running versions prior to iOS 18.7.11/26.7.1 and macOS Sequoia 15.8.1/Tahoe 26.7.1.
Apple macOS Screen Sharing Authentication Bypass Vulnerability (CVE-2026-65400)
[Affected Scope] macOS systems running versions prior to Sequoia 15.7.9, Sonoma 14.8.9, Tahoe 26.6.1/26.7, or Golden Gate 27 with Screen Sharing or VNC services enabled
Google Chrome Skia Graphics Engine Out-of-bounds Write Vulnerability (CVE-2026-3909) Technical Advisory
[Affected Scope] Google Chrome and Chromium-based browsers prior to version 146.0.7680.75
Subscribe to Daily Vulnerability Briefings & KEV Alerts
Concise morning briefings for SecOps, DevSecOps, and SRE teams covering newly exploited CVEs and mitigation priorities.