CVE-2025-14409 – CVE-2025-14409 is an out-of-bounds write vulner... (How to Fix)

Q: What is the severity of CVE-2025-14409?

CVE-2025-14409 has a CVSS score of 7.8 (HIGH). CVE-2025-14409 is an out-of-bounds write vulnerability in Soda PDF Desktop's PDF file parser that allows remote code execution when a user opens a malicious PDF file. Attackers can exploit this to execute arbitrary code with the privileges of the current user. All users running vulnerable versions of Soda PDF Desktop are affected.

📋 TL;DR

CVE-2025-14409 is an out-of-bounds write vulnerability in Soda PDF Desktop's PDF file parser that allows remote code execution when a user opens a malicious PDF file. Attackers can exploit this to execute arbitrary code with the privileges of the current user. All users running vulnerable versions of Soda PDF Desktop are affected.

💻 Affected Systems

Products:

Soda PDF Desktop

Versions: Versions prior to the patched release (specific version numbers not provided in advisory)

Operating Systems: Windows

Default Config Vulnerable: ⚠️ Yes

Notes: All default installations are vulnerable. The vulnerability requires user interaction to open a malicious PDF file.

📦 What is this software?

Soda Pdf by Sodapdf

View all CVEs affecting Soda Pdf →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise with attacker gaining full control of the affected system, data theft, ransomware deployment, or lateral movement within the network.

🟠

Likely Case

Malware installation, credential theft, or data exfiltration from the compromised user's system.

🟢

If Mitigated

Limited impact with proper application sandboxing, but potential data loss from the user's session.

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: HIGH

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires user interaction (opening malicious PDF) but is otherwise straightforward. The vulnerability was discovered by ZDI (ZDI-CAN-27120).

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Latest version from vendor (check vendor advisory for specific version)

Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-25-1082/

Restart Required: Yes

Instructions:

1. Open Soda PDF Desktop
2. Navigate to Help > Check for Updates
3. Install all available updates
4. Restart the application

🔧 Temporary Workarounds

Disable PDF file association

windows

Prevent Soda PDF from automatically opening PDF files

Control Panel > Default Programs > Set Default Programs > Choose another program for PDF files

Application sandboxing

windows

Run Soda PDF in restricted environment

🧯 If You Can't Patch

Block PDF files at network perimeter/email gateway
Implement application allowlisting to prevent unauthorized PDF viewers

🔍 How to Verify

Check if Vulnerable:

Check Soda PDF version against vendor's patched version list

Check Version:

In Soda PDF: Help > About

Verify Fix Applied:

Confirm Soda PDF is updated to latest version and test with known safe PDF files

📡 Detection & Monitoring

Log Indicators:

Unexpected Soda PDF crashes
Unusual process spawning from Soda PDF
PDF file access from untrusted sources

Network Indicators:

Outbound connections from Soda PDF to unknown IPs
Unusual data exfiltration patterns

SIEM Query:

Process: 'SodaPDF.exe' AND (EventID: 1000 OR ParentProcess contains powershell/cmd)

📊 Metadata

CVE ID: CVE-2025-14409

CVSS v3 Score: 7.8 (HIGH)

CVSS Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE: CWE-787

EPSS Score: 0.07% exploit probability (21th percentile)

Published: December 23, 2025

Last Updated: January 21, 2026

🔗 References

https://www.zerodayinitiative.com/advisories/ZDI-25-1082/ Third Party Advisory

📤 Share & Export

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🔗 Related Vulnerabilities

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