Exploited vulnerability · CISA KEV

Is CVE-2017-12615 exploited? Yes: in CISA KEV since 25 Mar 2022

Gociux · Apache Tomcat · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2017-12615, Apache Tomcat on Windows Remote Code Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Mar 2022, 1648 days after it was published. It is known to be used in ransomware campaigns. It affects Apache Tomcat. If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

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.

What to do

1. Check whether you run it. Look for Tomcat in your asset inventory, including appliances and cloud images. Stack check lists every exploited Apache CVE at once.
2. Apply the fix. Apply updates per vendor instructions.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 19 Sep 2017.
4. Get told next time. Email alerts when CISA adds a CVE for Apache.

Other exploited CVEs in Tomcat

• CVE-2026-34486: Apache Tomcat Missing Encryption of Sensitive Data Vulnerability (4 Aug 2026)
• CVE-2025-24813: Apache Tomcat Path Equivalence Vulnerability (1 Apr 2025)
• CVE-2016-8735: Apache Tomcat Remote Code Execution Vulnerability (12 May 2023)
• CVE-2017-12617: Apache Tomcat Remote Code Execution Vulnerability (25 Mar 2022)
• CVE-2020-1938: Apache Tomcat Improper Privilege Management Vulnerability (3 Mar 2022)

References

• nvd.nist.gov/vuln/detail/CVE-2017-12615

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in March 2022 · Apache scorecard · act-now radar.