CVE-2025-9121: Hitachi Vantara Pentaho Data Integration and Analytics · Deserialization of Untrusted Data
Affects Hitachi Vantara Pentaho Data Integration and AnalyticsSource CVE Database V5
Not known to be exploited · CVSS 8.8 High.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 15 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Hitachi Vantara Pentaho Data Integration and Analytics | Affected
| Fixed in– |
AI-suggested
Organizations should immediately inventory their Pentaho deployments to identify affected versions prior to 10.2.0.4. Although no official patches are currently listed, monitoring Hitachi Vantara advisories for updates is critical. In the interim, restrict network access to Pentaho services by implementing strict firewall rules and network segmentation to limit exposure to untrusted networks. Employ application-layer controls such as web application firewalls (WAFs) with custom rules to detect and block suspicious JSON payloads. Implement strict input validation and sanitization on any data sources feeding into Pentaho dashboards. Consider deploying runtime application self-protection (RASP) solutions to detect anomalous deserialization behavior. Limit privileges of the Pentaho service account to the minimum necessary to reduce impact if compromised. Conduct regular security assessments and penetration testing focused on deserialization vectors. Finally, prepare incident response plans specific to analytics platform compromises.
Description
Pentaho Data Integration and Analytics Community Dashboard Editor plugin versions before 10.2.0.4, including 9.3.0.x and 8.3.x, deserialize untrusted JSON data without constraining the parser to approved classes and methods.