Mars Climate Orbiter, 1999: http://articles.latimes.com/1999/oct/01/news/mn-17288. Undetected metric conversion error (though unclear if this was a manual process or software).
Toyota unintended acceleration, 2010: https://www.edmunds.com/car-safety/for-toyota-owners-uninten.... Toyota maintains that it was not caused by software error.
Now let's list some cases where the software did have ultimate control:
Schiaparelli EDM lander, 2016: https://newatlas.com/esa-schiaparelli-mars-crash-inquiry/496.... Faulty decision-making in the automated descent system due to input saturation.
Tesla auto-pilot crash, 2016: https://www.theguardian.com/technology/2016/jun/30/tesla-aut.... Faulty decision-making due to incorrect image analysis. In this case, the additional safety controls (the driver himself) failed too.
Uber car crash, 2018: https://money.cnn.com/2018/03/20/news/companies/self-driving.... Faulty decision-making due to incorrect image analysis, though the investigation is still ongoing, so no definite cause determined (FAFAIK).