CVE-2026-0611Network attack vector

Unauthenticated RCE via exposed .NET Remoting channel

Published Jun 2, 2026 · Updated Jun 2, 2026

Remote code execution in Spacelabs Healthcare Sentinel before 11.6.0 allows remote attackers to execute code via .NET Remoting. The unauthenticated HTTP channel on port 8989 accepts valid .NET URI endpoints for arbitrary file reads and writes, including ASPX webshell writes into IIS wwwroot. Exploitation requires deliberate network exposure of port 8989, which is closed by default, and grants code execution through the written webshell.

CVSS severity9.2
Critical
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in Spacelabs Healthcare Sentinel before 11.6.0 allows remote attackers to execute code via .NET Remoting. The unauthenticated HTTP channel on port 8989 accepts valid .NET URI endpoints for arbitrary file reads and writes, including ASPX webshell writes into IIS wwwroot. Exploitation requires deliberate network exposure of port 8989, which is closed by default, and grants code execution through the written webshell.

The record

CVE
CVE-2026-0611
Published
Jun 2, 2026
Updated
Jun 2, 2026
Vendor
Spacelabs Healthcare
Product
Sentinel
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.5.0 <11.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spacelabs Healthcare · Sentinelversion=10.5.0 <11.6.0

Published CVSS scores

9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.3Spacelabs HealthcareCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
9.2Spacelabs HealthcareCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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