# CVE-2020-29629: Information disclosure in macOS

> A malicious application can read restricted memory due to an out-of-bounds read vulnerability in macOS.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 28 Oct 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-q4cp-jqj9-c4cv

## What is CVE-2020-29629?

CVE-2020-29629 is a medium-severity vulnerability in Apple Macos, published on 28 Oct 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1. A malicious application may be able to read restricted memory.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2020-29629?

It affects 1 product.


Products: Apple Macos.

## How do I fix CVE-2020-29629?

No fix has been published for CVE-2020-29629 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-29629 being exploited?

There is no known exploitation of CVE-2020-29629 in the wild and no public exploit code.

## Other vulnerabilities in Apple Macos

- [CVE-2026-65400](https://insights.sbomify.com/CVE-2026-65400/): Apple macOS Improper Authentication (critical 9.8, exploited in the wild)
- [CVE-2024-44146](https://insights.sbomify.com/CVE-2024-44146/): Security feature bypass in macOS (critical 10.0)
- [CVE-2024-44148](https://insights.sbomify.com/CVE-2024-44148/): Security feature bypass in macOS (critical 10.0)
- [CVE-2023-38586](https://insights.sbomify.com/CVE-2023-38586/): Security feature bypass in macOS (critical 10.0)
- [CVE-2023-40455](https://insights.sbomify.com/CVE-2023-40455/): Security feature bypass in macOS (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29629 and fix it if it is affected.

What it is: CVE-2020-29629 is a medium-severity vulnerability in Apple Macos, published on 28 Oct 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-29629 in the wild and no public exploit code.

Affected product: Apple Macos. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2020-29629/ (Markdown: https://insights.sbomify.com/CVE-2020-29629/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29629
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29629
- OSV: https://osv.dev/vulnerability/CVE-2020-29629

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29629/
Summaries are generated and may contain mistakes; the official description above is the record.