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Vulnerabilities

Vulnerability · CVE-2026-111594

InterSystems Corporation InterSystems IRIS for Health

Published Oct 22, 2026 · catalog updated Nov 2, 2026 · InterSystems IRIS for Health

Last checked Nov 3, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-111594. EPSS is 0.19%. Act only if a listed version of InterSystems IRIS for Health is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.19%
Remediation
Vendor / distro source
Affected products
vendor InterSystems · vendor InterSystems IRIS for Health

View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to view transmitted data and use that data to log into the device. The following versions of InterSystems Corporation InterSystems IRIS for Health are affected: InterSystems IRIS for Health 2026.2.0.221, 2026.1.0.235, 2025.3.0.226 (CVE-2026-111594, CVE-2026-111594, CVE-2026-111594) <table class="t

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor InterSystemsversion unspecified
  • vendor InterSystems IRIS for Healthversion unspecified

How to fix CVE-2026-111594

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-111594. EPSS is 0.19%. Act only if a listed version of InterSystems IRIS for Health is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-319: Cleartext Transmission of Sensitive Information. EPSS 0.19%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 22, 2026 · CISA Cybersecurity Advisories

    Detected

    View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to view transmitted data and use that data to log into the device. The following versions of InterSystems Corporation InterSystems IRIS for Health are affected: InterSystems IRIS for Health 2026.2.0.221, 2026.1.0.235, 2025.3.0.226 (CVE-2026-111594, CVE-2026-111594, CVE-2026-111594) <table class="t

  2. Oct 22, 2026 · CVE.org

    Updated

    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.

  3. Nov 2, 2026 · EUVD

    Updated

    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.

Sources

  • CISA Cybersecurity AdvisoriesGovernment advisoryCVE-2026-111594

    View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to view transmitted data and use that data to log into the device. The following versions of InterSystems Corporation InterSystems IRIS for Health are affected: InterSystems IRIS for Health 20

    cisa.gov
  • CVE.orgVulnerability recordCVE-2026-111594

    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.

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-111594

    30-day exploitation probability 0.19%

    first.org
  • EUVDVulnerability recordEUVD-2026-108523

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 3, 2026
  • EUVDNov 2, 2026
  • CISA Cybersecurity AdvisoriesOct 31, 2026
  • CVE.orgOct 23, 2026