The below quote contains links to the specific vulnerability documentation.
In 2021, computer scientist and election security expert J. Alex Halderman delivered a sworn report about 5.5-A vulns to the federal court in the case _Curling v. Raffensperger_. The federal judge unsealed the report last month. Halderman's own summary of it last month can be found here: https://freedom-to-tinker.com/2023/06/14/security-analysis-of-the-dominion-i... His full unsealed report can be found here: https://storage.courtlistener.com/recap/gov.uscourts.gand.240678/gov.uscourt...
In 2022, Homeland Security's CISA component had access to the then-sealed Halderman Report and confirmed the 5.5-A vulns, issued their own advisory here: https://www.cisa.gov/news-events/ics-advisories/icsa-22-154-01