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In some instances, it has been reported that attackers have been successful because targeted customers had failed to apply available Oracle patches. Oracle continues to periodically receive reports of attempts to maliciously exploit vulnerabilities for which Oracle has already released security patches. Refer to “Critical Patch Updates, Security Alerts and Bulletins” for information about Oracle Security advisories. Thus, prior Critical Patch Update advisories should be reviewed for information regarding earlier published security patches. These patches are usually cumulative, but each advisory describes only the security patches added since the previous Critical Patch Update Advisory. These patches address vulnerabilities in Oracle code and in third-party components included in Oracle products. Oracle Critical Patch Update Advisory - April 2021 DescriptionĪ Critical Patch Update is a collection of patches for multiple security vulnerabilities.
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