When you generate a report in Microsoft SQL Server 2008 R2 Reporting Services (SSRS 2008 R2) Report Manager, the report is not compliant with section 1194.22(a) in the Section 508 standards.
When screen reader software is used by a visually impaired user to access a report that is generated by Report Manager, the screen reader software cannot provide a meaningful prompt for the report Export button on the Report Viewer toolbar.
The issue was first fixed in the following cumulative update of SQL Server.
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server: