Summary
Snowflake.Data has weak temporary files permissions
Issue
Snowflake discovered and remediated a vulnerability in the Snowflake Connector for .NET in which files downloaded from stages are temporarily placed in a world-readable local directory, making them accessible to unauthorized users on the same machine.
This vulnerability affects versions 2.0.12 through 4.2.0 on Linux and macOS. Snowflake fixed the issue in version 4.3.0.
Vulnerability Details
When downloading files from stages, the Snowflake Connector for .NET uses the OS temporary directory to save files before copying them to the destination directory. The files in the temporary directory, which are removed once the write to the destination directory concludes, have world-readable permissions on Linux and macOS. This could allow any user on the local machine to access them during their limited lifetime.
Additional Information
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Impact
CVE-2025-24788 has a CVSS score of 5.0 (Medium). The vector is requires local access, low privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.3.0); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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Snowflake released version 4.3.0 of the Snowflake Connector for .NET, which fixes this issue. We recommend users upgrade to version 4.3.0.
Frequently Asked Questions
- What is CVE-2025-24788? CVE-2025-24788 is a medium-severity security vulnerability in Snowflake.Data (nuget), affecting versions >= 2.0.12, <= 4.2.0. It is fixed in 4.3.0.
- How severe is CVE-2025-24788? CVE-2025-24788 has a CVSS score of 5.0 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of Snowflake.Data are affected by CVE-2025-24788? Snowflake.Data (nuget) versions >= 2.0.12, <= 4.2.0 is affected.
- Is there a fix for CVE-2025-24788? Yes. CVE-2025-24788 is fixed in 4.3.0. Upgrade to this version or later.
- Is CVE-2025-24788 exploitable, and should I be worried? Whether CVE-2025-24788 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2025-24788 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2025-24788? Upgrade
Snowflake.Datato 4.3.0 or later.