# CVE-2025-66495: Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability

> A remote attacker can execute arbitrary code by tricking a user into opening a malicious PDF file in Foxit PDF Reader.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Dec 2025
- **Updated:** 19 Dec 2025
- **Also known as:** GHSA-xr34-pc3c-449f

## What is CVE-2025-66495?

CVE-2025-66495 is a high-severity use after free vulnerability in Foxit Pdf Editor, published on 19 Dec 2025. 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

A use-after-free vulnerability exists in the annotation handling of Foxit PDF Reader before 2025.2.1, 14.0.1, and 13.2.1 on Windows and MacOS. When opening a PDF containing specially crafted JavaScript, a pointer to memory that has already been freed may be accessed or dereferenced, potentially allowing a remote attacker to execute arbitrary code.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2025-66495?

It affects 2 products.


Products: Foxit Pdf Editor, Foxit Pdf Reader.

## How do I fix CVE-2025-66495?

No fix has been published for CVE-2025-66495 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-66495 being exploited?

There is no known exploitation of CVE-2025-66495 in the wild and no public exploit code.

## Other vulnerabilities in Foxit Pdf Editor

- [CVE-2022-28104](https://insights.sbomify.com/CVE-2022-28104/): File upload in n/a (critical 9.8)
- [CVE-2022-24954](https://insights.sbomify.com/CVE-2022-24954/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-24955](https://insights.sbomify.com/CVE-2022-24955/): Other in n/a (critical 9.8)
- [CVE-2026-91798](https://insights.sbomify.com/CVE-2026-91798/): Foxit PDF Editor/Reader Updater Privilege Escalation (high 8.8)
- [CVE-2026-91800](https://insights.sbomify.com/CVE-2026-91800/): Foxit PDF Editor installer local privilege escalation (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-66495 and fix it if it is affected.

What it is: CVE-2025-66495 is a high-severity use after free vulnerability in Foxit Pdf Editor, published on 19 Dec 2025. 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-2025-66495 in the wild and no public exploit code.

Affected product: Foxit Pdf Editor. 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-2025-66495/ (Markdown: https://insights.sbomify.com/CVE-2025-66495/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-66495
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-66495
- OSV: https://osv.dev/vulnerability/CVE-2025-66495

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-66495/
Summaries are generated and may contain mistakes; the official description above is the record.