CVE-2017-12615: Apache Tomcat on Windows Remote Code Execution Vulnerability
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.
CSIRTS triage
- What
- A vulnerability allows uploading a JSP file via HTTP PUT, which can then be executed by the server.
- Who is affected
- Deployments of Apache Tomcat on Windows with HTTP PUTs enabled are affected.
- Urgency
- Immediate remediation is critical due to the potential for remote code execution and active exploitation.
- Action
- Disable HTTP PUT or update to the latest version of Apache Tomcat.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-12615
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2017-12615Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2017-12615 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Apache Tomcat on
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- medium[UPDATE] [medium] Apache Tomcat and Tomcat Native: Multiple vulnerabilitiescert-bund · 2026-07-10
- medium[UPDATE] [medium] Apache Tomcat: Multiple vulnerabilitiescert-bund · 2026-07-09
- high[UPDATE] [high] Apache Tomcat: Multiple vulnerabilitiescert-bund · 2026-07-02
- unknownApache Tomcat Multiple Vulnerabilitieshkcert · 2026-07-02
- unknownMultiple vulnerabilities in Apache Tomcat (June 30, 2026)cert-fr-avis · 2026-06-30
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