Cyber Resilience

CVE-2021-38135

High

Published: 22 November 2024

Published
22 November 2024
Modified
04 March 2025
KEV Added
Patch
CVSS Score v3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
EPSS Score 0.0009 26.4th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-38135 is a high-severity Network Amplification (CWE-406) vulnerability in Microfocus Imanager. Its CVSS base score is 8.6 (High).

Operationally, ranked at the 26.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Possible External Service Interaction attack in iManager has been discovered in OpenText™ iManager 3.2.6.0000.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

microfocus
imanager
3.2.6 · 3.0 — 3.2.5

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-918

Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.

addresses: CWE-406

Limits attacker success in sustaining network amplification DoS against the primary by providing a ready alternate processing capability.

addresses: CWE-406

Provides continuity when primary telecom is disrupted by insufficient control of network message volume or amplification.

addresses: CWE-406

Network-volume amplification against one channel can be bypassed via the pre-established alternate path.

addresses: CWE-406

Implements network message volume controls to block amplification DoS vectors.

addresses: CWE-918

Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.

addresses: CWE-918

Validates server-side URLs and resource references to block SSRF attempts.

addresses: CWE-918

Detects server-side request forgery through monitoring of unexpected outbound connections.

References