Adobe on Tuesday announced security updates for several products, including for Acrobat and Reader, in which the software giant patched a total of 26 vulnerabilities. Of the 26 security holes fixed in the Windows and macOS versions of Acrobat and Reader, 16 have been assigned a “critical” severity rating (high severity based on their CVSS score), and a majority are memory-related issues that can be exploited for arbitrary code execution. Four of these critical vulnerabilities — CVE-2021-44704 through CVE-2021-44707 — were disclosed by four different teams at China’s Tianfu Cup hacking contest. Tianfu Cup organizers offered up to $60,000 for...