Cleartext transmission in InterSystems IRIS for Health exposes data
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-319.
Summary
InterSystems IRIS for Health from 2025.3.0.226, from 2026.1.0.235 and from 2026.2.0.221 turns TLS/SSL encryption off by default. The flaw is cleartext transmission of sensitive information (CWE-319), so traffic is sent unencrypted. An unauthenticated remote attacker can view transmitted data and use it to log in to the device.
Written with Claude Haiku 5.5 from the sources below · 2026-11-02
Description from the CNA
InterSystems IRIS for Health has TLS/SSL encryption turned off by default, which may enable an attacker to view transmitted data and use that data to log into the device.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| InterSystems | IRIS for Health | 2026.2.0.221; 2026.1.0.235; 2025.3.0.226 | — | No fix listed | CNA |
- IRIS for Health VendorInterSystems Affected 2026.2.0.221; 2026.1.0.235; 2025.3.0.226 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for InterSystems IRIS for Health.
Written with Claude Haiku 5.5 from the sources below · 2026-11-02
Timeline
- 2026-10-23 Threatist record created from CVE-2026-111594
- 2026-10-23 Alias added: GHSA-qg7q-rhjp-mfxj
- 2026-10-23 Priority changed: MEDIUM → LOW
- 2026-11-02 CISA SSVC decision points changed
- 2026-11-02 Priority changed: LOW → MEDIUM
References
Other 5
- https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls?KEY=ROARS_gsecuring_checklist
- https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls?KEY=GSA_manage_superserver
- https://wrc.intersystems.com
- https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-295-01
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-295-01.json
More InterSystems vulnerabilities
- TI-2009-04915 InterSystems Caché UtilConfigHome.csp Stack Buffer Overflow CVSS 4.0CRITICAL 9.3
- TI-2003-01233 Unspecified vulnerability in the Cache' Server Page (CSP) implementation in InterSystems… CVSS 2.0HIGH 10.0
- TI-2003-00468 Caché Database 5.x installs /cachesys/bin/cache with world-writable permissions, which… CVSS 2.0HIGH 7.2
- TI-2003-00469 Caché Database 5.x installs the /cachesys/csp directory with insecure permissions, which… CVSS 2.0HIGH 7.2
- TI-2018-12258 Intersystems Cache 2017.2.2.865.0 allows XXE. CVSS 3.0MEDIUM 6.4
- TI-2018-12256 Intersystems Cache 2017.2.2.865.0 allows XSS. CVSS 3.0MEDIUM 6.1
Sources
- CVE-2026-111594 · CVE Program
- CVE-2026-111594 · NVD
- FIRST EPSS
- GHSA-qg7q-rhjp-mfxj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences