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PatchSiren cyber security CVE debrief

CVE-2025-30047 CGM CVE debrief

A critical vulnerability was found in CGM CLININET, allowing for remote code execution via Java deserialization. The server's HTTP-based API, used by the administrative module, exchanges data using Java object serialization, which can be exploited by an attacker within the same local network to transmit a crafted serialized object, leading to arbitrary code execution with root privileges on the server. This issue was fixed in version 2026.MS3.

Vendor
CGM
Product
CGM CLININET
CVSS
CRITICAL 9.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-23
Original CVE updated
2026-10-28
Advisory published
2026-10-23
Advisory updated
2026-10-28

Who should care

Defenders responsible for CGM CLININET systems, particularly those with internet-exposed administrative modules, should assess exposure and apply the patch. Network administrators and security teams should also be aware of the vulnerability and its potential impact.

Why it matters

CVE-2025-30047 is a critical vulnerability in CGM CLININET that allows for remote code execution via Java deserialization. Defenders should assess exposure, apply the patch, and monitor for suspicious activity to prevent exploitation.

  • Remote code execution with root privileges on the server
  • Potential for lateral movement within the network
  • Need for immediate patching to prevent exploitation
  • Possible impact on patient care and healthcare services if exploited

Technical summary

The vulnerability is caused by the deserialization of untrusted data in the CGM CLININET server's HTTP-based API, used by the administrative module. An attacker within the same local network can send requests to this API and transmit a crafted serialized object, allowing for arbitrary code execution with root privileges on the server. This issue was fixed in version 2026.MS3. Defenders should assess exposure, apply the patch, and monitor for suspicious activity to prevent exploitation. The CVE record and source item provide details on the vulnerability, including its description, CVSS score, and affected versions.

Defensive priority

High priority should be given to assessing exposure and applying the patch, as the vulnerability allows for remote code execution with root privileges.

Recommended defensive actions

  • Assess exposure of CGM CLININET systems to the internet and restrict access if necessary
  • Verify that the patch (version 2026.MS3) has been applied to affected systems
  • Monitor for suspicious activity on the administrative module's HTTP-based API
  • Consider implementing additional security controls, such as network segmentation or intrusion detection
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description, CVSS score, and affected versions. However, the corpus does not provide information on known exploitation or victims.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-30047 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-30047

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-30047 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-30047

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Remote Code Execution via Java Deserialization in CGM CLININET

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/30xxx/CVE-2025-30047.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://cert.pl/en/posts/2026/10/CVE-2025-30043/

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://www.cgm.com/pol_pl/products/szpital/cgm-clininet.html

    Supplemental source - product

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.