At present, the vulnerability database research has mainly focused on whether the disclosed information is accurate. However, the information differences between the various vulnerability databases have received little attention. This article proposes a WITTY (softWare versIon inconsisTency measuremenT sYstem) to detect the differences between the affected software versions of NVD and different language vulnerability databases (including English CVE, OpenWall, Chinese CNNVD, CNVD, and other eight databases). WITTY can enable Our large-scale quantitative information consistency. We introduce named entity recognition (NER) and relation extraction (RE) based on deep learning. We present custom design into named entity recognition (NER) and relation extraction (RE) based on deep learning, enabling WITTY to recognize previously invisible software names and versions based on sentence structure and context. Ground-truth shows that the system has a high accuracy rate (95.3% accuracy rate, 89.9% recall rate). We use data from 8 vulnerability databases in the past 21 years, involving 554,725 vulnerability reports. The results show that they are inconsistent. The software version is prevalent. The average exact match rate of English vulnerability databases CVE, OpenWall, and other vulnerability databases with cve is only 22.1%. The average exact match rate of Chinese CNNVD and CNVD is 49.5%, and the excat match rate of Russian vulnerability databases is 25.8%.