CVE-2025-46326 Snowflake Connector for .NET has race condition when checking access to Easy Logging configuration file
A local attacker can exploit a race condition in the Snowflake .NET connector's Easy Logging feature to overwrite configuration files and escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-46326?
CVE-2025-46326 is a low-severity vulnerability in snowflakedb snowflake-connector-net, published on 28 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
snowflake-connector-net is the Snowflake Connector for .NET. Versions starting from 2.1.2 to before 4.4.1, are vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition. When using the Easy Logging feature on Linux and macOS, the Connector reads logging configuration from a user-provided file. On Linux and macOS, the Connector verifies that the configuration file can be written to only by its owner. That check was vulnerable to a TOCTOU race condition and failed to verify that the file owner matches the user running the Connector. This could allow a local attacker with write access to the configuration file or the directory containing it to overwrite the configuration and gain control over logging level and output location. This issue has been patched in version 4.4.1.
Weakness: CWE-367
Which versions are affected by CVE-2025-46326?
2 open source packages ship an affected version, including Snowflake.Data. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Snowflake.Data NuGet | From 2.1.2 | 4.4.1 |
Snowflake.Data NuGet | From 2.1.2 | 4.4.1 |
Products include Snowflake Snowflake Connector.
How do I fix CVE-2025-46326?
Upgrade Snowflake.Data to 4.4.1 or later.
Is CVE-2025-46326 being exploited?
There is no known exploitation of CVE-2025-46326 in the wild and no public exploit code.
Other vulnerabilities in snowflakedb snowflake-connector-net
- CVE-2023-34230 Snowflake Connector vulnerable to Command Injection
- CVE-2023-34232 Snowflake NodeJS Driver vulnerable to Command Injection
- CVE-2023-34233 Snowflake Python Connector vulnerable to Command Injection
- CVE-2025-24793 Snowflake Connector for Python has an SQL Injection in write_pandas
- CVE-2025-24794 The Snowflake Connector for Python uses insecure deserialization of the OCSP response cache
Sources
Also known as GHSA-c82r-c9f7-f5mj.