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Single-file encryption may not trigger detection due to reliance on modification thresholds.


Advisory ID: BWD-2026-003 

Published: January 15, 2026 

Last Updated: January 15, 2026 

Severity: Medium 

CVSS Base Score: 5.3 

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N 

CWE: CWE-358 

CVE: CVE-2025-62002 

 

Description

Helm Ransomware Containment considers the number of files modified to trigger detection. An authenticated attacker could encrypt a single (possibly large) file without triggering detection if thresholds are configured to require multiple file changes. The number of files to trigger detection can be configured by the user. Versions 4.6.0.0, 4.6.0.6, 4.6.0.7, and 4.6.1.4 are affected. Other versions may also be affected. 

 

Impact

Confidentiality: No Impact 

Integrity: No Impact 

Availability: No Impact 

 

Affected Products and Versions

Product / Components: Helm RC 

Affected Versions: Versions < 4.6.1.4 

Fixed Versions: 4.6.1.14 

 

Solution

This behavior is driven by configurable thresholds. 

Helm can be configured to trigger on single-file encryption, and customers routinely tune thresholds based on operational tolerance for noise. 

The advisory wording may suggest an inherent inability to detect single-file encryption, which is not accurate. 

 

Mitigations / Workarounds

Adjust detection sensors thresholds to improve sensor sensitvity level 

Configure additional detecion sensor dedicated to critical documents 

 

Detections

Helm does not currently provide a detection for this issue. 

 

Acknowledgements

Helm thanks the reporter for responsibly disclosing this issue. 

This advisory is provided for informational purposes only. Customers should evaluate applicability based on their specific environment. To report a security vulnerability, contact security@helmsecurity.ai.