Multiple Hacker Groups Exploit 3-Year-Old Vulnerability to Breach U.S. Federal Agency

Multiple threat actors, including a nation-state group, exploited a critical three-year-old security flaw in Progress Telerik to break into an unnamed federal entity in the U.S.
The disclosure comes from a joint advisory issued by the Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), and Multi-State Information Sharing and Analysis Center (MS-ISAC).