Exploited CVEs / Apache / CVE-2017-12615
CVE-2017-12615
Apache Tomcat on Windows Remote Code Execution Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted, and the vulnerability is known to be used in ransomware campaigns. Federal agencies were required to remediate by 2022-04-15 (that deadline has passed); treat that date as the outer bound for your own environment. Check the vendor security advisory for the fix.
Actively exploited Apache Tomcat vulnerability, High severity, CVSS 8.1. Added to the CISA KEV catalog 2022-03-25.
Risk summary
Updated July 28, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2017-12615
This flaw lets an attacker upload a JSP web shell through an HTTP PUT request on Windows Tomcat servers that have the readonly parameter for the default servlet set to false. It matters right now because it carries a 100 percent EPSS score, sits on the CISA KEV list, and has been used in ransomware campaigns, so exposed servers are being actively targeted. Anyone running Tomcat on Windows with HTTP PUT enabled is exposed to remote code execution.
Do this: Confirm the default servlet readonly parameter is true (or PUT is disabled) in web.xml on all Windows Tomcat hosts, then patch to a fixed Tomcat release.
AI-generated from public data, 2026-07-22. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2017-12615
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2017-12615
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2022-04-15 (past due).
Apply updates per vendor instructions.
Official fix for CVE-2017-12615
Check the vendor's security advisory channel for the patched Tomcat versions and workarounds.
Common questions about CVE-2017-12615
Is CVE-2017-12615 actively exploited?
Yes. CVE-2017-12615 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2022-03-25, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 100%. CISA also reports it is known to be used in ransomware campaigns.
What is the CISA deadline and required action for CVE-2017-12615?
CISA set the federal (BOD 22-01) remediation due date at 2022-04-15, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply updates per vendor instructions.
What fixes CVE-2017-12615?
Check the vendor's security advisory for the patched Tomcat versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2017-12615?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2017-12615's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
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Authoritative references
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