Description

IBM System Storage DS8A00 10.1.3.0 through 10.11.35.0 and IBM DS8900F 89.40.83.0 through 89.44.25.0 could allow an attacker to bypass security authentication due to improperly encoding of DSCLI command output to obtain sensitive information or cause a denial of service.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.4",
  "pubDate": "2026-08-19T22:16:36.303Z",
  "pubdate": "2026-08-19T22:16:36.303Z",
  "executiveSummary": "An authentication bypass vulnerability has been identified in IBM System Storage DS8A00 and IBM DS8900F storage systems. The vulnerability stems from the improper encoding of DSCLI command output, which can be leveraged by an unauthorized attacker to compromise security controls. Successful exploitation of this security flaw allows a malicious actor to bypass authentication mechanisms, leading to the unauthorized acquisition of sensitive system information or the induction of a denial of service condition against the targeted storage infrastructure. The affected products include IBM System Storage DS8A00 versions 10.1.3.0 through 10.11.35.0 and IBM DS8900F versions 89.40.83.0 through 89.44.25.0. This security deficiency poses significant risk implications regarding confidentiality and availability, potentially exposing critical enterprise data and disrupting core storage operations. The vulnerability profile indicates that an attacker possessing network access to the management interface could exploit these encoding discrepancies without requiring prior valid credentials or elevated privileges, depending on the specific attack vector. Remediation requires applying official vendor patches or updates as provided by IBM to correct the DSCLI command output encoding handling.",
  "technicalDetails": "The root cause of the vulnerability resides in the improper encoding of command output generated by the DS8000 Command Line Interface (DSCLI) utility within the storage management subsystem. When processing specific CLI command responses, the underlying application logic fails to properly sanitize or encode data structures, leading to parsing anomalies and security boundary violations.\nThe vulnerable components are the administrative interfaces and CLI processing modules responsible for handling DSCLI command execution and output serialization across IBM System Storage DS8A00 (versions 10.1.3.0 through 10.11.35.0) and IBM DS8900F (versions 89.40.83.0 through 89.44.25.0).\nThe attack flow begins when an unauthenticated network attacker sends crafted requests or interacts with the DSCLI management interfaces. Due to flawed output encoding routines, the application misinterprets the data stream or command responses, causing a breakdown in the session validation and authentication state machine. This improper handling allows the attacker to circumvent standard authentication checks entirely.\nPost-exploitation impact includes the unauthorized extraction of sensitive system configuration data, internal metrics, or administrative details disclosed through the improperly encoded outputs. Alternatively, an attacker can manipulate the input/output parsing mechanism to trigger exceptions or resource exhaustion, resulting in a denial of service condition that disrupts storage management capabilities and impacts system availability.\nThe exploitation method relies entirely on interacting with the network-exposed management services. Authentication requirements and privilege requirements are bypassed due to the flaw, allowing unprivileged or unauthenticated external entities to reach the vulnerable code paths. Payload behavior centers on exploiting parser discrepancies and improper encoding practices to force unauthorized access states or service disruptions within the affected storage hardware management controllers."
}