Latest zero-days Total: 461, in 2020: Zero-days 26, candidates: 2

Remote code execution in FreeType library
CVE-2020-15999

Arbitrary file upload in File Manager plugin for WordPress
CVE-2020-25213

The vulnerability exploitation was detected on September 1st, 2020. The attackers can remotely upload arbitrary files and execute arbitrary code.

Denial of service in Cisco IOS XR Software
CVE-2020-3569

Not patched

On August 31 Cisco has updated the original advisory to indicate the second vulnerability exploited in the wild.

Denial of service in Cisco IOS XR Software
CVE-2020-3566

Not patched

On August 28, 2020, the Cisco Product Security Incident Response Team (PSIRT) became aware of attempted exploitation of this vulnerability in the wild.

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.