Latest zero-days Total: 460, in 2020: Zero-days 25, candidates: 2

Arbitrary file upload in File Manager plugin for WordPress

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.

Remote code execution in Microsoft Internet Explorer
CVE-2020-1380

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.