CERT-In has been authorized by the CVE Program as a CVE Numbering Authority (CNA) and assigns CVE IDs to vulnerabilities which require CVE assignment as per its CNA scope.  https://www.cve.org/PartnerInformation/ListofPartners/partner/CERT-In

CERT-In performs Responsible Vulnerability Disclosure and Coordination with the aim to nurture responsible vulnerability research & disclosure of vulnerabilities by researchers to enable timely remediable measures by affected vendors/entities. https://www.cert-in.org.in/RVDCP.jsp