Apache Avro Java SDK 1.11.x/1.12.0 Code Injection from Malicious Schemas
CVE-2025-33042 Published on February 13, 2026
Apache Avro Java SDK: Code injection on Java generated code
Improper Control of Generation of Code ('Code Injection') vulnerability in Apache Avro Java SDK when generating specific records from untrusted Avro schemas.
This issue affects Apache Avro Java SDK: all versions through 1.11.4 and version 1.12.0.
Users are recommended to upgrade to version 1.12.1 or 1.11.5, which fix the issue.
Vulnerability Analysis
CVE-2025-33042 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
What is a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2025-33042 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2025-33042
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Affected Versions
Apache Software Foundation Apache Avro Java SDK:- Before and including 1.11.4 is affected.
- Version 1.12.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.