A Toyota spokesperson told Reuters that it was a "supplier system failure."
Latest from Jonathan Greig
The vulnerabilities have a remediation date of March 8.
Researchers at Palo Alto Network's Unit 42 said they discovered a tool that serves as a backup backdoor in case the primary one is removed.
New York City also pushed through an executive order mandating cyber command liaisons for every city agency.
The websites of Ukraine's defense ministry as well as state banks Privatbank and Oschadbank were down on Tuesday due to an alleged DDoS attack.
The country's foreign and consular relations department reported a cyberattack last week.
Officials noted that "Russia's threshold for conducting disruptive or destructive cyber attacks in the homeland probably remains very high."
The US said the four are involved in an effort to recruit Ukrainian citizens to create instability in advance of a potential Russian invasion.
The International Committee of the Red Cross said it detected the attack this week and confirmed that it was not a ransomware attack.
Palo Alto Networks Unit 42 and Group-IB helped law enforcement officials disrupt the ring, which was in possession of more than 800,000 potential victim domain credentials.