Patch Sonar

Zero-days under active attack, explained in plain English

Zero-day report: July 2023

CISA added 16 exploited vulnerabilities to its catalog in July 2023, 8 fewer than June (24). 12 were zero-days, listed within a week of going public. 4 are known to be used by ransomware. The most-hit vendor was Microsoft, with 5.

16exploited flaws added
12zero-days
4used by ransomware
9vendors affected

By technology

Most-hit vendors

Every flaw added in July 2023

← June 2023August 2023 →

Source: CISA's Known Exploited Vulnerabilities catalog, by the date CISA added each flaw. Ransomware use is CISA's flag.