# CVE-2020-35990: Memory corruption in n/a

> Local attackers can cause a denial of service in Foxit PDF Reader by exploiting a buffer overflow via a crafted PDF file.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **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:** 11 Aug 2023
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-6qhr-cpg4-c66p

## What is CVE-2020-35990?

CVE-2020-35990 is a medium-severity memory corruption vulnerability in Foxit Pdf Reader, published on 11 Aug 2023. 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

Buffer Overflow vulnerability in cFilenameInit parameter in browseForDoc function in Foxit Software Foxit PDF Reader version 10.1.0.37527, allows local attackers to cause a denial of service (DoS) via crafted .pdf file.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2020-35990?

It affects 1 product.


Products: Foxit Pdf Reader.

## How do I fix CVE-2020-35990?

No fix has been published for CVE-2020-35990 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-35990 being exploited?

There is no known exploitation of CVE-2020-35990 in the wild and no public exploit code.

## Other vulnerabilities in Foxit Pdf Reader

- [CVE-2021-38563](https://insights.sbomify.com/CVE-2021-38563/): Null dereference in n/a (critical 9.8)
- [CVE-2025-32451](https://insights.sbomify.com/CVE-2025-32451/): Memory corruption in Foxit Reader (high 8.8)
- [CVE-2024-28888](https://insights.sbomify.com/CVE-2024-28888/): Use after free in Foxit Reader (high 8.8)
- [CVE-2023-27379](https://insights.sbomify.com/CVE-2023-27379/): Use after free in Foxit Reader (high 8.8)
- [CVE-2023-28744](https://insights.sbomify.com/CVE-2023-28744/): Use after free in Foxit Reader (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-35990 and fix it if it is affected.

What it is: CVE-2020-35990 is a medium-severity memory corruption vulnerability in Foxit Pdf Reader, published on 11 Aug 2023. 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-2020-35990 in the wild and no public exploit code.

Affected product: Foxit Pdf Reader. 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-2020-35990/ (Markdown: https://insights.sbomify.com/CVE-2020-35990/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35990
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35990
- OSV: https://osv.dev/vulnerability/CVE-2020-35990

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-35990/
Summaries are generated and may contain mistakes; the official description above is the record.