Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
Chrome Releases reports:
This release includes 5 security fixes:
 High CVE-2020-16000: Inappropriate implementation in
Blink. Reported by amaebi_jp on 2020-09-06
 High CVE-2020-16001: Use after free in media.
Reported by Khalil Zhani on 2020-10-05
 High CVE-2020-16002: Use after free in PDFium.
Reported by Weipeng Jiang (@Krace) from Codesafe Team of Legendsec
at Qi'anxin Group on 2020-10-13
 High CVE-2020-15999: Heap buffer overflow in
Freetype. Reported by Sergei Glazunov of Google Project Zero on
 Medium CVE-2020-16003: Use after free in printing.
Reported by Khalil Zhani on 2020-10-04