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Back to active CVEs
Critical · CVSS 9.2CVE-2026-111594

InterSystems Corporation InterSystems IRIS for Health Cleartext Transmission of Sensitive InformationCVE-2026-111594

Answer in brief

CVE-2026-111594 records a Critical severity (CVSS 9.2) vulnerability in InterSystems Corporation InterSystems IRIS for Health Cleartext Transmission of Sensitive Information. The current sources do not mark it as known exploited. The current feed maps InterSystems/IRIS for Health (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 22, 2026Updated Oct 22, 2026Source checked Oct 22, 2026First seen by HOL Oct 22, 2026Material review Oct 22, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-319
Source
CVE List V5
Source checked
Oct 22, 2026
References
5 linked sources
Open source record

Key facts

Risk
Critical · CVSS 9.2
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 9.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps InterSystems/IRIS for Health (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
InterSystems/IRIS for Healthgeneric2026.2.0.221 || 2026.1.0.235 || 2025.3.0.226Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for InterSystems/IRIS for Health.
  2. 2Review the reported fix. Source-reported workaround: InterSystems recommends users configure IRIS superserver to require SSL/TLS: https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls?KEY=ROARS_gsecuring_checklist Note that there are three settings: "Disabled", which means that client communications do not use TLS. "Enabled", which means that client communications may use TLS (but they also may not) and "Required", which forces all client communications to use TLS. InterSystems documentation explains how to configure the server to require TLS: https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls?KEY=GSA_manage_superserver For more information about how to configure a system to mitigate this vulnerability, contact InterSystems at their world wide response center: https://wrc.intersystems.com (login required)

Evidence timeline and material changes

  1. Published upstream

    Oct 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 22, 2026

Sources and claim methodology

  • Source referencedocs.intersystems.com
  • Source referencedocs.intersystems.com
  • GitHub security advisorygithub.com
  • Source referencewrc.intersystems.com
  • CISA Known Exploited Vulnerabilities catalogcisa.gov
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.