# CVE-2020-9677: Memory corruption in Adobe Prelude

> An out-of-bounds read vulnerability in Adobe Prelude allows attackers to execute arbitrary code.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 22 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-87hv-wrhm-fv9f

## What is CVE-2020-9677?

CVE-2020-9677 is a high-severity memory corruption vulnerability in Adobe Prelude, published on 22 Jul 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Adobe Prelude versions 9.0 and earlier have an out-of-bounds read vulnerability. Successful exploitation could lead to arbitrary code execution.

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

## Which versions are affected by CVE-2020-9677?

It affects 1 product.


Products: Adobe Prelude.

## How do I fix CVE-2020-9677?

No fix has been published for CVE-2020-9677 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9677 being exploited?

There is no known exploitation of CVE-2020-9677 in the wild and no public exploit code.

## Other vulnerabilities in Adobe Prelude

- [CVE-2020-9678](https://insights.sbomify.com/CVE-2020-9678/): Memory corruption in Adobe Prelude (high 8.8)
- [CVE-2020-9680](https://insights.sbomify.com/CVE-2020-9680/): Memory corruption in Adobe Prelude (high 8.8)
- [CVE-2021-43754](https://insights.sbomify.com/CVE-2021-43754/): Adobe Prelude Corruption could lead to Arbitrary code execution (high 7.8)
- [CVE-2021-40770](https://insights.sbomify.com/CVE-2021-40770/): Adobe Prelude M4A File Parsing Memory Corruption Arbitrary Code Execution (high 7.8)
- [CVE-2021-40771](https://insights.sbomify.com/CVE-2021-40771/): Adobe Prelude WAV File Parsing Memory Corruption Arbitrary Code Execution (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9677 and fix it if it is affected.

What it is: CVE-2020-9677 is a high-severity memory corruption vulnerability in Adobe Prelude, published on 22 Jul 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-9677 in the wild and no public exploit code.

Affected product: Adobe Prelude. 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-2020-9677/ (Markdown: https://insights.sbomify.com/CVE-2020-9677/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9677
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9677
- OSV: https://osv.dev/vulnerability/CVE-2020-9677

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-9677/
Summaries are generated and may contain mistakes; the official description above is the record.