Apache Log4j Vulnerability - Update

February 28, 2022

^* This is an update to the December 13, 2021, December 15, 2021, December 17, 2021, January 5, 2022 and January 26, 2022 post regarding the same topic.

ADP is aware of the following Apache Log4j Vulnerabilities:

• CVE-2021-44228
• CVE-2021-44832
• CVE-2021-45046
• CVE-2021-45105
• CVE-2021-4104

Upon receiving reports regarding these vulnerabilities, ADP’s Global Security Organization began an investigation and is actively working to identify any potential impacts to our system and prioritizing any necessary patching. At this time, we can confirm no ADP solutions have been accessed and no client data has been compromised. ADP’s layered defense includes technologies and controls to identify and/or prevent these types of threats, including assessing vulnerabilities and applying appropriate protection and detection control updates.

ADP’s Global Security Organization continues to actively monitor and respond to this developing situation as it does with all reported vulnerabilities. Clients are encouraged to visit ADP’s website at www.adp.com/trust to learn more about how ADP protects data, and how clients can help protect themselves.

Protecting our clients and their data from malicious activity is a top priority for ADP.