Fixed that for you. :/
At some point you have to think these are deliberate.
Network hardware is to operate in the adversarial landscape which is the open internet. It requires an extreme, exhaustive workflow to ensure bugs do not slip through. That we repeatedly see these failures does not raise confidence.
- 2016-01 https://tools.cisco.com/security/center/content/CiscoSecurit...
- 2018-03 https://www.cisco.com/c/en/us/support/docs/csa/cisco-sa-2018...
- 2018-10 https://www.cisco.com/c/en/us/support/docs/csa/cisco-sa-2018...
- 2019-07 https://tools.cisco.com/security/center/content/CiscoSecurit...
Edit: formatting
https://www.wired.com/2016/01/new-discovery-around-juniper-b...
If my job were to ensure backdoor access to everything I could, at least to get started I'd sort a list of hardware vendors by marketshare.