The US government Cybersecurity and Infrastructure Security Agency (CISA) has issued security advisories for various Cisco products and Zimbra Collaboration Suite:
Cisco Releases Security Updates for Multiple Products | CISA
My advice: Either you or your IT support need to check whether these issues impact your systems. You need to have a master document that details your systems, hardware, software, online, networks, back-ups, suppliers etc – so when cyber security (or operational) issues arise you and your support teams can quickly check if you are affected. From there you can take fast, effective action.
CISA also releases industrial control system advisories – if you are responsible for these types of systems you should monitor their news page:
