CVE-2026-120060: Integer Underflow
psqlODBC trusts counts and lengths in server data in three places. SQLBulkOperations uses a server-supplied row count in a size subtraction that can underflow. SQLStatistics iterates index keys using a server-supplied key count without bounding it to the fixed storage. Bytea octal decoding reads up to two bytes past the end of a truncated escape sequence. A server not trusted under current SSL settings can crash the client or make it read out of bounds. Versions before psqlODBC 18.00.0006 are affected.
Affected Software
Event History
Frequently Asked Questions
Which clients are exposed to this issue?
psqlODBC versions before 18.00.0006 are affected. The issue applies when the client communicates with a server that is not trusted under the client’s current SSL settings.
What does an attacker need to do to exploit it?
An attacker needs to provide malicious server data to a psqlODBC client, including crafted row counts, index key counts, or truncated bytea escape sequences. Exploitation can cause a client crash or out-of-bounds reads.
Is user interaction required?
Yes. The supplied severity vector indicates user interaction is required, although no further details about the required action are provided.