CVE-2025-69624: n/a
Nitro PDF Pro before 14.43 for Windows contains a NULL pointer dereference vulnerability in the JavaScript implementation of app.alert(). When app.alert() is called with more than one argument and the first argument evaluates to null (for example, app.alert(app.activeDocs, true) when app.activeDocs is null), the engine routes the call through a fallback path intended for non-string arguments. In this path, js_ValueToString() is invoked on the null value and returns an invalid string pointer, which is then passed to JS_GetStringChars() without validation. Dereferencing this pointer leads to an access violation and application crash when opening a crafted PDF. For example, 14.41.1.4 and 14.42.0.34 have been reported as vulnerable.
AI Analysis
Technical Summary
CVE-2025-69624 is a NULL pointer dereference vulnerability in Nitro PDF Pro's JavaScript engine for Windows versions before 14.43. The flaw occurs when app.alert() is called with more than one argument and the first argument evaluates to null. The JavaScript engine incorrectly processes this null value through a fallback path, invoking js_ValueToString() which returns an invalid string pointer. This pointer is then passed unchecked to JS_GetStringChars(), leading to an access violation and application crash when opening a crafted PDF file. Versions 14.41.1.4 and 14.42.0.34 are confirmed vulnerable. The vulnerability is classified under CWE-476 (NULL Pointer Dereference).
Potential Impact
The vulnerability causes a high-severity denial of service by crashing the Nitro PDF Pro application when a specially crafted PDF is opened. There is no impact on confidentiality or integrity, as the issue only leads to an application crash (availability impact). No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor Nitro PDF Pro vendor communications for updates or patches addressing this vulnerability. Until a fix is available, avoid opening untrusted PDF files that could trigger the vulnerability.
CVE-2025-69624: n/a
Description
Nitro PDF Pro before 14.43 for Windows contains a NULL pointer dereference vulnerability in the JavaScript implementation of app.alert(). When app.alert() is called with more than one argument and the first argument evaluates to null (for example, app.alert(app.activeDocs, true) when app.activeDocs is null), the engine routes the call through a fallback path intended for non-string arguments. In this path, js_ValueToString() is invoked on the null value and returns an invalid string pointer, which is then passed to JS_GetStringChars() without validation. Dereferencing this pointer leads to an access violation and application crash when opening a crafted PDF. For example, 14.41.1.4 and 14.42.0.34 have been reported as vulnerable.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/nitro/pdf-pro-windowsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-69624 is a NULL pointer dereference vulnerability in Nitro PDF Pro's JavaScript engine for Windows versions before 14.43. The flaw occurs when app.alert() is called with more than one argument and the first argument evaluates to null. The JavaScript engine incorrectly processes this null value through a fallback path, invoking js_ValueToString() which returns an invalid string pointer. This pointer is then passed unchecked to JS_GetStringChars(), leading to an access violation and application crash when opening a crafted PDF file. Versions 14.41.1.4 and 14.42.0.34 are confirmed vulnerable. The vulnerability is classified under CWE-476 (NULL Pointer Dereference).
Potential Impact
The vulnerability causes a high-severity denial of service by crashing the Nitro PDF Pro application when a specially crafted PDF is opened. There is no impact on confidentiality or integrity, as the issue only leads to an application crash (availability impact). No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor Nitro PDF Pro vendor communications for updates or patches addressing this vulnerability. Until a fix is available, avoid opening untrusted PDF files that could trigger the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-01-09T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dd0c8782d89c981f09c94d
Added to database: 04/13/2026, 15:32:23 UTC
Last enriched: 07/05/2026, 21:22:23 UTC
Last updated: 07/31/2026, 19:22:56 UTC
Views: 148
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