Oracle 10.2.0.5 «TRUSTED ◉»

Because Oracle ended patch generation for 10.2.0.5 many years ago, the platform remains highly vulnerable to modern exploits.

Released as the terminal Patch Set for the 10g family, 10.2.0.5 represents the end of an era. It was the last hurrah for the "g" (grid) branding and the final stop before the drastic architectural changes of 11g and the cloud-native rush of 12c. oracle 10.2.0.5

If you are on 10.2.0.5, treat it as a critical technical debt item. Plan your escape to at least 19c (or 23ai). If you can't escape, lock it in a dark room, back it up twice, and don't touch it. Because Oracle ended patch generation for 10