TETRA (Terrestrial Trunked Radio) is a digital voice and text radio communications protocol often used by authorities and industry in European and many countries other than the USA. A major advantage to a digital communications protocol like TETRA is it's ability to be secured via encryption. Recently the security researchers at Midnight Blue in the Netherlands have discovered a collection of five vulnerabilities collectively called 'TETRA:BURST' that apply to almost every TETRA network in the world. These two most critical vulnerabilities allow TETRA to be easily decrypted by consumer hardware. The first critical vulnerability is designated CVE-2022-24401 is described as

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Viele Organisationen, die auf Tetra-basierte Funkgeräte vertrauen, kommunizieren offenbar nicht ganz so abhörsicher wie bisher vermutet.

A secret encryption cipher baked into radio systems used by critical infrastructure workers, police, and others around the world is finally seeing sunlight. Researchers say it isn?t pretty.

WIRED