CVE-2025-30038: CGM CLININET · Exposure of Sensitive Information Through Metadata
Affects CGM CLININETSource CVE Database V5
Not known to be exploited · CVSS 7.3 High.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:HExploitation evidence
Disclosed: evidence found.
CVE published 27 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| CGM CGM CLININET | Affected
| Fixed in– |
AI-suggested
Given the absence of an official patch, European organizations should implement immediate compensating controls. First, restrict and monitor access to internal networks where CGM CLININET is deployed to limit adjacent network attack vectors. Employ strict user privilege management to minimize high privilege accounts and enforce least privilege principles. Educate users about the risks of interacting with downloaded files and potential social engineering attacks. Implement endpoint detection and response (EDR) solutions capable of detecting unusual access or manipulation of NTFS ADS metadata. Regularly audit files downloaded from CGM CLININET for hidden ADS streams containing sensitive information and securely delete or quarantine such files. Network segmentation can help isolate CGM CLININET systems from less trusted network zones. Additionally, organizations should engage with CGM for timely updates and patches and consider temporary session management changes, such as shortening session lifetimes or implementing multi-factor authentication to reduce the impact of session ID exposure. Logging and monitoring of session activities should be enhanced to detect suspicious session hijacking attempts. Finally, review and update incident response plans to include scenarios involving metadata-based information leaks.
Description
The vulnerability consists of a session ID leak when saving a file downloaded from CGM CLININET. The identifier is exposed through a built-in Windows security feature that stores additional metadata in an NTFS alternate data stream (ADS) for all files downloaded from potentially untrusted sources.