# CVE-2020-9739: Adobe Media Encoder FLV File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

> An out-of-bounds read in Adobe Media Encoder allows attackers to disclose sensitive memory information or cause a crash via malicious files.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L`)
- **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:** 18 Sep 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-282c-c2hf-44pq

## What is CVE-2020-9739?

CVE-2020-9739 is a medium-severity vulnerability in Adobe Media Encoder, published on 18 Sep 2020. 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

Adobe Media Encoder version 14.3.2 (and earlier versions) has an out-of-bounds read vulnerability that could be exploited to read past the end of an allocated buffer, possibly resulting in a crash or disclosure of sensitive information from other memory locations. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

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

## Which versions are affected by CVE-2020-9739?

It affects 1 product.


Products: Adobe Media Encoder.

## How do I fix CVE-2020-9739?

No fix has been published for CVE-2020-9739 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9739 being exploited?

There is no known exploitation of CVE-2020-9739 in the wild and no public exploit code.

## Other vulnerabilities in Adobe Media Encoder

- [CVE-2019-8246](https://insights.sbomify.com/CVE-2019-8246/): Memory corruption in Adobe Media Encoder (critical 9.8)
- [CVE-2019-7842](https://insights.sbomify.com/CVE-2019-7842/): Use after free in Adobe Media Encoder (high 8.8)
- [CVE-2026-47971](https://insights.sbomify.com/CVE-2026-47971/): Media Encoder | Stack-based Buffer Overflow (CWE-121) (high 7.8)
- [CVE-2026-47976](https://insights.sbomify.com/CVE-2026-47976/): Media Encoder | Out-of-bounds Write (CWE-787) (high 7.8)
- [CVE-2026-48366](https://insights.sbomify.com/CVE-2026-48366/): Media Encoder | Out-of-bounds Write (CWE-787) (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9739 and fix it if it is affected.

What it is: CVE-2020-9739 is a medium-severity vulnerability in Adobe Media Encoder, published on 18 Sep 2020. 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-2020-9739 in the wild and no public exploit code.

Affected product: Adobe Media Encoder. 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-2020-9739/ (Markdown: https://insights.sbomify.com/CVE-2020-9739/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9739
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9739
- OSV: https://osv.dev/vulnerability/CVE-2020-9739

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-9739/
Summaries are generated and may contain mistakes; the official description above is the record.