# CVE-2021-21103: Adobe Illustrator memory corruption vulnerability could lead to information disclosure

> An attacker can disclose sensitive memory information by tricking a user into opening a malicious file in Adobe Illustrator.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/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:** No
- **Published:** 8 Sep 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-wc7j-ww93-98v3

## What is CVE-2021-21103?

CVE-2021-21103 is a medium-severity memory corruption vulnerability in Adobe Illustrator, published on 8 Sep 2021. 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 Illustrator version 25.2 (and earlier) is affected by a memory corruption vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to disclose sensitive memory information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Weakness: CWE-787 (Out-of-bounds Write), CWE-788 (Access of Memory Location After End of Buffer)

## Which versions are affected by CVE-2021-21103?

It affects 1 product.


Products: Adobe Illustrator.

## How do I fix CVE-2021-21103?

No fix has been published for CVE-2021-21103 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-21103 being exploited?

There is no known exploitation of CVE-2021-21103 in the wild and no public exploit code.

## Other vulnerabilities in Adobe Illustrator

- [CVE-2014-0513](https://insights.sbomify.com/CVE-2014-0513/): Memory corruption in n/a (critical 10.0)
- [CVE-2012-2042](https://insights.sbomify.com/CVE-2012-2042/): Memory corruption in n/a (critical 10.0)
- [CVE-2012-0780](https://insights.sbomify.com/CVE-2012-0780/): Memory corruption in n/a (critical 10.0)
- [CVE-2012-2023](https://insights.sbomify.com/CVE-2012-2023/): Memory corruption in n/a (critical 10.0)
- [CVE-2012-2024](https://insights.sbomify.com/CVE-2012-2024/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-21103 and fix it if it is affected.

What it is: CVE-2021-21103 is a medium-severity memory corruption vulnerability in Adobe Illustrator, published on 8 Sep 2021. 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-2021-21103 in the wild and no public exploit code.

Affected product: Adobe Illustrator. 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-2021-21103/ (Markdown: https://insights.sbomify.com/CVE-2021-21103/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-21103
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-21103
- OSV: https://osv.dev/vulnerability/CVE-2021-21103

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-21103/
Summaries are generated and may contain mistakes; the official description above is the record.