# CVE-2025-66769: Nitro PDF Pro NULL pointer dereference in XFA processing

Source: https://junglewise.ai/threats/cve-2025-66769-nitro-pdf-pro-null-pointer-dereference-in-xfa-processing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-13. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2025-66769 · Severity: high · CVSS 7.5 · Published 2026-04-13

Nitro PDF Pro is a popular application used for creating, editing, and signing PDF documents. A vulnerability in how the software handles specific PDF form data (XFA) allows an attacker to crash the application by providing a specially crafted file. If a user opens such a file, the program will terminate immediately, potentially leading to data loss or disruption of operations.

Technologies: [Gonitro Nitro Pdf Pro](https://junglewise.ai/threats/technologies/nitro-pdf-pro), [Microsoft Windows](https://junglewise.ai/threats/technologies/windows). Vendors: [Gonitro](https://junglewise.ai/threats/vendors/gonitro), [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2025-66769 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-66769 being exploited in the wild.

**How severe is CVE-2025-66769?** High severity, with a CVSS score of 7.5, published 13 April 2026.

**Which products and versions are affected?** Nitro Nitro PDF Pro 14.41.1.4.

**Is there a fix for CVE-2025-66769?** A patch was published on 2026-01-09: Vendor patch release Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-66769 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2025-66769?** Check whether you run Gonitro Nitro Pdf Pro or Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A NULL pointer dereference exists in Nitro PDF Pro 14.41.1.4 during the processing of XML Forms Architecture (XFA) data. When a PDF contains an empty /XFA array within the /AcroForm dictionary, the application's XFA processing routine attempts to locate root nodes (such as 'xdp:xdp' or 'template'). Because the structure is empty, the lookup function returns a NULL pointer, which is subsequently dereferenced by the next operation without validation. An attacker can trigger this crash by convincing a user to open a maliciously crafted PDF file. The vendor released a patch for this issue on January 9, 2026.

## Affected products

- Nitro Nitro PDF Pro 14.41.1.4

## Timeline

- 2025-11-19: disclosed: Vulnerability reported to vendor
- 2026-01-09: patched: Vendor patch release
- 2026-04-06: advisory: Public release of advisory
- 2026-04-13: other: CVE published

## References

- [https://jeroscope.com/advisories/2025/jero-2025-015/](https://jeroscope.com/advisories/2025/jero-2025-015/)
- [https://www.gonitro.com/](https://www.gonitro.com/)

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