CVE-2025-66769Public exploitNetwork attack vector

Application crash via unchecked empty XFA lookup

Published Apr 13, 2026 · Updated Apr 13, 2026

NULL pointer dereference in Nitro PDF Pro for Windows 14.41.1.4 allows attackers to crash the application with a crafted PDF. The XFA processor accepts an empty /XFA array under /AcroForm, receives NULL when locating xdp:xdp, and passes that pointer into the template-node lookup without validation. Exploitation requires the malicious document to be opened and terminates only the Nitro PDF Pro process, interrupting PDF work until the application restarts.

CVSS severity7.5
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Nitro PDF Pro for Windows 14.41.1.4 allows attackers to crash the application with a crafted PDF. The XFA processor accepts an empty /XFA array under /AcroForm, receives NULL when locating xdp:xdp, and passes that pointer into the template-node lookup without validation. Exploitation requires the malicious document to be opened and terminates only the Nitro PDF Pro process, interrupting PDF work until the application restarts.

The record

CVE
CVE-2025-66769
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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