# CVE-2018-4936: Memory corruption in Adobe Flash Player 29.0.0.113 and earlier versions

> Heap overflow in Adobe Flash Player allows attackers to disclose sensitive information.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 19 May 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-rvf6-cp8q-hrxp, UBUNTU-CVE-2018-4936

## What is CVE-2018-4936?

CVE-2018-4936 is a medium-severity memory corruption vulnerability in Adobe Flash Player, published on 19 May 2018. 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 Flash Player versions 29.0.0.113 and earlier have an exploitable Heap Overflow vulnerability. Successful exploitation could lead to information disclosure.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2018-4936?

It affects 2 products.


Products: Adobe Flash Player, Adobe Flash Player Desktop Runtime.

## How do I fix CVE-2018-4936?

Upgrade to a fixed version.

## Is CVE-2018-4936 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-4936 exists.

Public exploit code:

- Adobe Flash - Overflow when Playing Sound (exploitdb)

## Other vulnerabilities in Adobe Flash Player

- [CVE-2017-11292](https://insights.sbomify.com/CVE-2017-11292/): Adobe Flash Player Type Confusion (high 8.8, exploited in the wild)
- [CVE-2016-7892](https://insights.sbomify.com/CVE-2016-7892/): Adobe Flash Player Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2016-7855](https://insights.sbomify.com/CVE-2016-7855/): Adobe Flash Player Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2014-0497](https://insights.sbomify.com/CVE-2014-0497/): Adobe Flash Player Integer Underflow Vulnerablity (high 8.8, exploited in the wild)
- [CVE-2013-0643](https://insights.sbomify.com/CVE-2013-0643/): Adobe Flash Player Incorrect Default Permissions (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-4936 and fix it if it is affected.

What it is: CVE-2018-4936 is a medium-severity memory corruption vulnerability in Adobe Flash Player, published on 19 May 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-4936 exists.

Affected product: Adobe Flash Player. 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-2018-4936/ (Markdown: https://insights.sbomify.com/CVE-2018-4936/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-4936
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-4936
- OSV: https://osv.dev/vulnerability/CVE-2018-4936

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-4936/
Summaries are generated and may contain mistakes; the official description above is the record.