# CVE-2025-69627: Nitro PDF Pro use-after-free in mailDoc JavaScript method

Source: https://junglewise.ai/threats/cve-2025-69627-nitro-pdf-pro-use-after-free-in-maildoc-javascript-method  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-13. Updated: 2026-07-05  
License: CC BY 4.0 with a link back

CVE-2025-69627 · Severity: high · CVSS 8.4 · Published 2026-04-13

Nitro PDF Pro, a popular application for creating and editing PDF documents, is vulnerable to a memory handling error when processing specific JavaScript commands. An attacker could exploit this by tricking a user into opening a specially crafted PDF file, which could lead to application crashes or potentially allow for unauthorized code execution. This vulnerability poses a risk to the stability of the software and the security of the system it is running on.

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-2025-69627 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-69627 being exploited in the wild.

**How severe is CVE-2025-69627?** High severity, with a CVSS score of 8.4, published 13 April 2026.

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

**Is there a fix for CVE-2025-69627?** A patch was published on 2026-02-02: Vendor patch release Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-69627 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2025-69627?** Check whether you run Gonitro Nitro Pdf Pro, Microsoft Windows or Nitro PDF Pro at an affected version. 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 heap use-after-free vulnerability exists in Nitro PDF Pro 14.41.1.4 within the 'this.mailDoc()' JavaScript method implementation. The vulnerability is triggered when an internal XID object is allocated and then prematurely freed via 'j_j_free_0', yet the pointer remains in use by downstream routines such as 'CDumpContext::operator<<' and 'wcscmp()'. An attacker can trigger this condition by embedding a call to 'this.mailDoc()' in a malicious PDF document. Depending on the heap state, this leads to access violations, non-deterministic crashes, or potential exploitation if the freed memory is reclaimed by attacker-controlled data. A patch was released by the vendor in February 2026.

## Affected products

- Nitro Nitro PDF Pro 14.41.1.4

## Timeline

- 2025-12-10: disclosed: Vulnerability reported to vendor
- 2026-02-02: patched: Vendor patch release
- 2026-04-13: advisory: NVD publication date

## References

- [https://jeroscope.com/advisories/2025/jero-2025-016/](https://jeroscope.com/advisories/2025/jero-2025-016/)

## Related threats

- [Windows BitLocker heap buffer overflow with physical attack](https://junglewise.ai/threats/cve-2026-97015-heap-based-buffer-overflow-in-windows-bitlocker-allows-an)
- [Microsoft Windows Shell type confusion privilege elevation](https://junglewise.ai/threats/cve-2026-97013-access-of-resource-using-incompatible-type-type-confusion-in)
- [Microsoft Windows VMSwitch out-of-bounds read privilege escalation](https://junglewise.ai/threats/cve-2026-97002-out-of-bounds-read-in-windows-vmswitch-allows-an-authorized)
- [Microsoft Windows USM Communication Manager null pointer dereference](https://junglewise.ai/threats/cve-2026-97000-null-pointer-dereference-in-windows-usm-communication-manager)
- [Microsoft Windows Winsock use after free privilege escalation](https://junglewise.ai/threats/cve-2026-96994-use-after-free-in-winsock-allows-an-authorized-attacker-to)