Oracle Critical Patch Update Advisory - October 2021
A Critical Patch Update is a collection of patches for multiple security vulnerabilities.
These patches address vulnerabilities in Oracle code and in third-party components included in Oracle products.
These patches are
usually cumulative, but each advisory describes only the security patches added
since the previous Critical Patch Update Advisory. Thus, prior Critical Patch Update advisories should be
reviewed for information regarding earlier published security patches.
“Critical Patch Updates, Security Alerts and Bulletins”
for information about Oracle
Oracle continues to periodically receive reports of attempts to maliciously exploit vulnerabilities
for which Oracle has already released security patches. In some instances, it has been reported that attackers have
been successful because targeted customers had failed to apply available Oracle patches. Oracle therefore
strongly recommends that customers remain on actively-supported versions and apply Critical Patch Update
security patches without delay.
This Critical Patch Update contains 419 new security patches across the product families
listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle
Software Security Assurance activities is located at
October 2021 Critical Patch Update: Executive Summary and Analysis.