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A newly discovered vulnerability, CVE-2025-30065, has been identified in the Apache Parquet Java library, specifically within the parquet-avro module. This flaw is classified as Deserialization of Untrusted Data (CWE-502) and has been assigned a CVSS score of 10.0, marking it as a “Critical” severity vulnerability.
The vulnerability poses a major security risk to any system processing Parquet files—a popular columnar storage file format widely used in data processing and analytics. Organizations using Apache Parquet Java versions 1.8.0 to 1.15.0 are affected, making immediate mitigation essential.
This article provides an in-depth analysis of the impact, risks, and mitigation steps to secure your systems.
Impact of CVE-2025-30065
Attackers can exploit this flaw by injecting malicious payloads into Parquet files. Once these files are processed, the system executes the injected code, leading to severe consequences:
- System Takeover – Attackers can gain full control over the affected system.
- Data Breaches – Sensitive data could be stolen, leaked, or manipulated.
- Malware Deployment – Threat actors could install ransomware, cryptominers, or backdoors on compromised systems.
- Service Disruption – The attack may result in denial-of-service (DoS), leading to downtime and operational losses.
Exploitation Status
As of April 2025, no known active exploitation has been reported. However, given the critical nature of the flaw and its public disclosure, it is expected that attackers will soon develop exploits. Organizations must act swiftly to mitigate potential threats.
Mitigation Strategies
1. Upgrade to Apache Parquet 1.15.1+
- The Apache Software Foundation has released version 1.15.1, which addresses the vulnerability.
- Organizations should immediately update to 1.15.1 or later to close this security gap.
2. Avoid Processing Untrusted Files
- Do not process Parquet files from unverified sources until your system is patched.
- Restrict file uploads and data imports from external or third-party sources.
3. Implement Input Validation
- Scan file schemas for anomalies before processing Parquet files.
- Use sandbox environments to test and validate files before they are executed on live systems.
4. Enhance System Monitoring
- Enable logging and monitoring for suspicious activities related to Parquet file processing.
- Watch for unexpected processes, unauthorized system changes, or unusual network connections.
5. Stay Updated on Security Advisories
- Regularly check updates from Apache and cybersecurity authorities.
- Subscribe to vulnerability feeds and threat intelligence sources for real-time updates.
Risk Factor Analysis
| Risk Factor | Details |
|||
| Severity | Critical (CVSS 10.0) |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | Not Required |
| Impact | High on Confidentiality, Integrity, and Availability |
| Affected Versions | Apache Parquet Java ≤ 1.15.0 |
| Mitigation Steps | Upgrade to 1.15.1+, validate inputs, monitor logs |
What Undercode Says:
Understanding the Severity of CVE-2025-30065
CVE-2025-30065 is an example of how deserialization vulnerabilities remain a critical security risk in modern applications. Apache Parquet is widely used in big data ecosystems, data lakes, and analytics frameworks, making this vulnerability particularly dangerous.
Here’s why this flaw demands immediate attention:
- A CVSS Score of 10.0 – The Worst Possible Rating
The CVSS (Common Vulnerability Scoring System) score of 10.0 means this flaw is as severe as it gets. It requires no authentication, no user interaction, and can be easily exploited with high impact on systems.
2. Why Deserialization Vulnerabilities Are So Dangerous
Deserialization attacks allow attackers to execute arbitrary code when an application processes untrusted data. If a system automatically loads and processes Parquet files, attackers can craft a malicious payload that takes over the server, installs malware, or disrupts operations.
3. High-Profile Targets at Risk
Organizations using Apache Parquet in cloud environments, machine learning pipelines, or ETL (Extract, Transform, Load) workflows are particularly vulnerable. Companies handling financial data, healthcare records, and government intelligence must act quickly to avoid security breaches.
4. Could This Be the Next Log4Shell?
While not as widespread as Log4Shell (CVE-2021-44228), the impact of CVE-2025-30065 could be severe, especially if automated systems process untrusted Parquet files without validation. This vulnerability could be used to deploy ransomware, compromise entire cloud infrastructures, or steal highly sensitive data.
5. The Urgency of Patching
History has shown that unpatched deserialization vulnerabilities lead to mass exploitation within weeks of disclosure. Organizations must upgrade to Apache Parquet 1.15.1 immediately and enforce input validation to prevent exploitation.
6. Attackers Will Exploit This Soon
Even though there are no known active attacks at the moment, threat actors will likely develop exploits soon. Security teams should assume that CVE-2025-30065 will be weaponized and take proactive security measures.
Final Thoughts from Undercode
Cybersecurity is a race between attackers and defenders. Organizations that patch early and monitor for threats will reduce their exposure. Those that delay will become prime targets.
Fact Checker Results
- Apache has officially confirmed CVE-2025-30065, making it a legitimate and critical threat.
- The flaw affects Apache Parquet Java versions 1.8.0 to 1.15.0, and 1.15.1+ fixes the issue.
- No known active exploitation has been reported yet, but risks remain high.
Immediate action is necessary—patch now!
References:
Reported By: https://cyberpress.org/apache-parquet-rce/
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