Core:
    Fixed bug #79364 (When copy empty array, next key is unspecified).
    Fixed bug #78210 (Invalid pointer address).
CURL:
    Fixed bug #79199 (curl_copy_handle() memory leak).
Date:
    Fixed bug #79396 (DateTime hour incorrect during DST jump forward).
Iconv:
    Fixed bug #79200 (Some iconv functions cut Windows-1258).
OPcache:
    Fixed bug #79412 (Opcache chokes and uses 100% CPU on specific script).
Session:
    Fixed bug #79413 (session_create_id() fails for active sessions).
Shmop:
    Fixed bug #79427 (Integer Overflow in shmop_open()).
SimpleXML:
    Fixed bug #61597 (SXE properties may lack attributes and content).
Spl:
    Fixed bug #75673 (SplStack::unserialize() behavior).
    Fixed bug #79393 (Null coalescing operator failing with SplFixedArray).
Standard:
    Fixed bug #79330 (shell_exec() silently truncates after a null byte).
    Fixed bug #79465 (OOB Read in urldecode()). (CVE-2020-7067)
    Fixed bug #79410 (system() swallows last chunk if it is exactly 4095 bytes without newline).
Zip:
    Fixed bug #79296 (ZipArchive::open fails on empty file).
    Fixed bug #79424 (php_zip_glob uses gl_pathc after call to globfree).