Patch Sonar

Zero-days under active attack, explained in plain English

Zero-day report: February 2025

CISA added 27 exploited vulnerabilities to its catalog in February 2025, 13 more than January (14). 8 were zero-days, listed within a week of going public. 3 are known to be used by ransomware. The most-hit vendor was Microsoft, with 6.

27exploited flaws added
8zero-days
3used by ransomware
18vendors affected

By technology

Most-hit vendors

Every flaw added in February 2025

← January 2025March 2025 →

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