known ransomware use

Apache Tomcat on Windows Remote Code Execution Vulnerability

Added to KEV
2022-03-25
Federal due date
2022-04-15
Vendor
Apache
Product
Tomcat
EPSS
99.9th percentile (score 0.942, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2017-12615

CISA short description

When running Apache Tomcat on Windows with HTTP PUTs enabled, it is possible to upload a JSP file to the server via a specially crafted request. This JSP could then be requested and any code it contained would be executed by the server.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.