In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.
https://access.redhat.com/errata/RHSA-2017:1417
https://access.redhat.com/errata/RHSA-2017:1801
https://access.redhat.com/errata/RHSA-2017:1802
https://access.redhat.com/errata/RHSA-2017:2423
https://access.redhat.com/errata/RHSA-2017:2633
https://access.redhat.com/errata/RHSA-2017:2635
https://access.redhat.com/errata/RHSA-2017:2636
https://access.redhat.com/errata/RHSA-2017:2637
https://access.redhat.com/errata/RHSA-2017:2638
https://access.redhat.com/errata/RHSA-2017:2808
https://access.redhat.com/errata/RHSA-2017:2809
https://access.redhat.com/errata/RHSA-2017:2810
https://access.redhat.com/errata/RHSA-2017:2811
https://access.redhat.com/errata/RHSA-2017:2888
https://access.redhat.com/errata/RHSA-2017:2889
https://access.redhat.com/errata/RHSA-2017:3244
https://access.redhat.com/errata/RHSA-2017:3399
https://access.redhat.com/errata/RHSA-2017:3400
https://access.redhat.com/errata/RHSA-2019:1545
https://issues.apache.org/jira/browse/LOG4J2-1863
https://security.netapp.com/advisory/ntap-20180726-0002/
https://security.netapp.com/advisory/ntap-20181107-0002/
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
http://www.openwall.com/lists/oss-security/2019/12/19/2
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html