Transcriptional activator that binds specifically to the DNA sequence 5'-[AG]CCGAC-3'. Binding to the C-repeat/DRE element mediates cold-inducible transcription. CBF/DREB1 factors play a key role in freezing tolerance and cold acclimation. Interacts with 14-3-3 proteins GRF1, GRF3, GRF5, GRF6, GRF7, GRF9 and GRF10 in the nucleus upon freezing. By cold stress. Positively regulated by the transcription factor ICE1. Subject to degradation by the 26S proteasome pathway in freezing conditions (PubMed:28344081). Belongs to the AP2/ERF transcription factor family. ERF subfamily. Truncated C-terminus.