Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 98.9%; technical severity is CVSS 9.8.
The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.
Who should care
- Teams operating Struts, Struts 1
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether Struts, Struts 1 is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apply updates per vendor instructions.
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Vendor remediation
Patch and remediation links
Use the vendor source below to confirm the correct fixed version, package or mitigation for your affected product.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-20
- Affected versions
- Apache Struts (Version: 2.3.32); Apache Struts 1
- Published
- 10 July 2017
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 98.9%
- Signal calculated at 85
External references
- Government advisory from www.cisa.gov
- Vendor advisory from struts.apache.org
- Third-party advisory from www.securityfocus.com
- Third-party advisory from www.securitytracker.com
- Third-party advisory from security.netapp.com
- Third-party advisory from www.exploit-db.com
- Third-party advisory from www.exploit-db.com