Security readout for executives and security teams
CVE-2017-9791 is a critical Apache Struts issue that can let an unauthenticated remote attacker run code when a vulnerable Struts 1 plugin path processes a malicious ActionMessage field value. It affects Apache Struts 2.1.x and 2.3.x. CISA KEV status means exploitation has been observed, so legacy internet-facing Struts systems need urgent attention. Exposure is most likely in older applications running Apache Struts 2.1.x or 2.3.x with the Struts 1 plugin enabled, especially public web applications handling affected ActionMessage flows. Organizations may also be exposed indirectly through bundled Struts in vendor products, as suggested by third-party advisories in the source bundle. Treat this as an urgent remediation item for any legacy Struts estate. The vulnerability is critical, remotely reachable, and listed by CISA as known exploited. Business priority should be rapid identification, vendor-guided remediation, and temporary exposure reduction for public systems. Mitigation focus: Identify Apache Struts 2.1.x and 2.3.x applications using the Struts 1 plugin.; Review and apply Apache S2-048 vendor guidance for CVE-2017-9791.; Check vendor advisories for products embedding Apache Struts..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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Open ATT&CK lookupExecution behavior lookup
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Open ATT&CK lookupCVE-2017-9791 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 42324CVE reference · exploit, x_refsource_EXPLOIT-DB
- 44643CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://security.netapp.com/advisory/ntap-20180706-0002/CVE reference · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9791CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.