CVE-2026-86353 in PowerStore 500T
Summary
by MITRE • 11/13/2026
Dell PowerStore contains a use of a weak cryptographic algorithm vulnerability that could allow an attacker with existing privileged access to the appliance to recover stored credentials.
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Analysis
by VulDB Data Team • 11/13/2026
The identified vulnerability in Dell PowerStore represents a critical failure in cryptographic implementation, specifically categorized under CWE-327 as the Use of a Broken or Risky Cryptographic Algorithm. This flaw stems from the system's reliance on deprecated or insufficiently strong encryption methods to protect sensitive data at rest. In modern security architectures, particularly within enterprise storage appliances like PowerStore, it is imperative that all stored credentials and secrets are protected using robust algorithms such as AES-256 with appropriate key management practices. The use of weak cryptography indicates a deviation from current best practices defined by standards bodies including NIST SP 800-131A, which mandates the deprecation of legacy ciphers like DES or single-round MD5 for protecting sensitive information. This architectural weakness creates a significant attack surface where data confidentiality cannot be guaranteed against adversaries possessing sufficient computational resources or specialized cryptographic tools.
From an operational perspective, this vulnerability allows any attacker who has already achieved privileged access to the appliance to recover stored credentials in plaintext or through feasible reverse-engineering techniques. The presence of such weak encryption suggests that sensitive authentication tokens, API keys, or administrative passwords are not adequately obfuscated from users with elevated privileges within the system's operating environment. This scenario aligns closely with MITRE ATT&CK technique T1552.004, Unsecured Credentials: Private Keys, and more broadly with credential access patterns where attackers seek to harvest secrets for lateral movement or persistence. The ability to recover these credentials effectively neutralizes the security boundary established by authentication mechanisms, allowing an attacker to impersonate legitimate users, escalate privileges further if weaker accounts are reused across systems, or exfiltrate data from connected storage volumes that rely on these compromised keys for access control.
The impact of this vulnerability extends beyond immediate credential theft. It undermines the integrity and trustworthiness of the entire Dell PowerStore ecosystem by exposing foundational security controls to compromise. If an attacker can decrypt stored credentials, they may also be able to manipulate configuration settings or intercept communications that rely on these same weak cryptographic primitives for session establishment. This creates a cascading effect where initial privileged access leads to full system compromise, potentially affecting downstream services and data integrity across the organization's infrastructure. The risk is exacerbated by the fact that storage appliances often hold metadata about connected hosts and volumes, meaning recovered credentials could facilitate unauthorized access to critical business data stored on those devices.
Mitigation strategies must focus on immediate remediation of the cryptographic implementation alongside broader security hygiene improvements. Dell should issue a firmware update that replaces the weak algorithm with a NIST-approved standard such as AES-256-GCM or ChaCha20-Poly1305, ensuring proper key derivation and storage mechanisms are employed. In the interim, organizations running affected versions of PowerStore must enforce strict access controls to limit privileged user accounts to only those absolutely necessary for operational tasks. Implementing multi-factor authentication for administrative interfaces can provide an additional layer of defense even if credentials are compromised. Furthermore, regular audits of cryptographic configurations against industry standards like CIS Benchmarks and NIST guidelines should be conducted to detect similar weaknesses in other components of the infrastructure. Continuous monitoring for anomalous access patterns by privileged users is also recommended to detect potential exploitation attempts before significant damage occurs.