CVE-2017-5638

Apache Struts Remote Code Execution Vulnerability

IN CISA KEV

The Jakarta Multipart parser in Apache Struts 2 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 has incorrect exception handling and error-message generation during file-upload attempts, which allows remote attackers to execute arbitrary commands via a crafted Content-Type, Content-Disposition, or Content-Length HTTP header, as exploited in the wild in March 2017 with a Content-Type header containing a #cmd= string.

Vendor: Apache
Product: Struts
CVSS 3.1: 9.8 (critical), scored by NVD (primary)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1: 9.8 (critical), scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-755
Published: 2017-03-11
NVD modified: 2026-06-17
NVD status: Analyzed

CISA KEV

Date added: 2021-11-03
Due date: 2022-05-03
Ransomware use: Known
Required action: Apply updates per vendor instructions.

EPSS

100% chance of exploitation in the next 30 days (percentile 99th)

FIRST EPSS, updated 17 Oct 2026. About EPSS

CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.

References

www.arubanetworks.com (Third Party Advisory)
www.eweek.com (Press/Media Coverage, Third Party Advisory)
www.oracle.com (Patch, Third Party Advisory)
www.securityfocus.com (Broken Link, Third Party Advisory, VDB Entry)
www.securitytracker.com (Broken Link, Third Party Advisory, VDB Entry)
cwiki.apache.org (Mitigation, Vendor Advisory)
cwiki.apache.org (Mitigation, Vendor Advisory)
git1-us-west.apache.org (Broken Link)
git1-us-west.apache.org (Broken Link)
h20566.www2.hpe.com (Broken Link)
h20566.www2.hpe.com (Third Party Advisory)
h20566.www2.hpe.com (Third Party Advisory)

Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.