CVE-2017-12615: Apache Tomcat on Windows Remote Code Execution Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 25 Mar 2022, 1,648 days after the CVE record was published.

How likely is exploitation in the next 30 days?

99.7%

EPSS score, percentile 100 of all scored records

How severe?

8.1 High

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

CISA deadline 15 Apr 2022. Apply updates per vendor instructions.

Advisories and patches (6)

Which versions are affected?

Affected

• 7.0.0 to 7.0.79

Versions by product

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

CISA due date for this action: 15 April 2022.

Advisories and patches

• RHSA-2017:3113 (Vendor advisory)
• RHSA-2017:3080 (Vendor advisory)
• RHSA-2018:0465 (Vendor advisory)
• RHSA-2017:3114 (Vendor advisory)
• RHSA-2018:0466 (Vendor advisory)
• RHSA-2017:3081 (Vendor advisory)

Linked from CISA's catalog entry

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

Affected products and versions

As listed in the CVE record.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

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.

Summary: CISA's KEV catalog, as of 28 Oct 2026.

• CISA added CVE-2017-12615 to its Known Exploited Vulnerabilities (KEV) catalog on 25 Mar 2022.
• CISA marks it as known to be used in ransomware campaigns.
• The due date CISA sets for the required action is 15 Apr 2022.
• The CVE record was published on 19 Sep 2017, 1,648 days before it was added to KEV.
• The CVE record carries a CVSS v3.1 base score of 8.1 (High), taken from CISA's enrichment of the record.
• FIRST's EPSS model puts the probability of exploitation in the next 30 days at 99.7% (percentile 100), as of 28 Oct 2026.
• CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

Description

When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g. via setting the readonly initialisation parameter of the Default to false) it was 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.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Weakness

• CWE-434: Unrestricted Upload of File with Dangerous Type

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

References

• 42953 (Exploit)
• 1039392 (Vulnerability database)
• 100901 (Vulnerability database)
• [announce] 20170919 [SECURITY] CVE-2017-12615 Apache Tomcat Remote Code Execution via JSP upload
• synology.com
• breaktoprotect.blogspot.com

7 more in the CVE record.

More exploited Apache vulnerabilities

• CVE-2016-3081: Apache Struts Command Injection Vulnerability (added 8 Oct 2026)
• CVE-2026-34486: Apache Tomcat Missing Encryption of Sensitive Data Vulnerability (added 4 Aug 2026)
• CVE-2026-34197: Apache ActiveMQ Improper Input Validation Vulnerability (added 16 Apr 2026)
• CVE-2024-38475: Apache HTTP Server Improper Escaping of Output Vulnerability (added 1 May 2025)
• CVE-2025-24813: Apache Tomcat Path Equivalence Vulnerability (added 1 Apr 2025)
• CVE-2024-45195: Apache OFBiz Forced Browsing Vulnerability (added 4 Feb 2025)