A previously unknown vulnerability in Oracle's PeopleSoft software has affected hundreds of organizations, allowing attackers to extract large amounts of data. The security flaw has been classified as critical, representing one of the most serious types of vulnerabilities.
The zero-day designation means the vulnerability was exploited before Oracle or security researchers knew it existed. Organizations using PeopleSoft for human resources, financial management, and other enterprise functions have been exposed to data theft. The vulnerability enabled attackers to steal gigabytes of information from compromised systems.