CVE-2026-56580 in MyCloud
Summary
by MITRE • 07/21/2026
HCL MyCloud was affected by Using Components with Known Vulnerability ( IIS Server ). It may allow attackers to exploit publicly disclosed weaknesses and compromise the system.
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Analysis
by VulDB Data Team • 07/21/2026
HCL MyCloud represents a cloud storage platform that incorporates internet information services iis server components as part of its infrastructure stack. This deployment exposes the system to significant security risks through the use of vulnerable iis server components that have been publicly disclosed and documented in cybersecurity databases. The vulnerability landscape for iis servers includes numerous exploits targeting authentication bypasses, remote code execution capabilities, and privilege escalation scenarios that attackers can leverage to compromise the underlying system.
The technical flaw manifests through the inclusion of outdated or unpatched iis server modules within the mycloud platform architecture. These vulnerable components create attack vectors that align with common weakness enumerations such as cwe-476 null pointer dereference, cwe-79 cross-site scripting, and cwe-89 sql injection vulnerabilities that frequently affect iis deployments. Attackers can exploit these weaknesses through various methods including malformed http requests, malicious payload delivery, or by leveraging known exploits from databases like the common vulnerability and exposure cve list.
The operational impact of this vulnerability extends beyond simple system compromise to include potential data exfiltration, service disruption, and unauthorized access to sensitive corporate information stored within the mycloud environment. Organizations utilizing this platform face risks of persistent threats that can establish backdoors, escalate privileges, or maintain long-term access to their cloud infrastructure. The attack surface expands significantly when considering that iis server vulnerabilities often provide attackers with multiple exploitation pathways including web application attacks, protocol manipulation, and system-level compromise techniques.
Mitigation strategies should prioritize immediate patch management for all iis components within the mycloud environment while implementing comprehensive network segmentation and monitoring controls. Organizations must establish robust vulnerability assessment procedures that include regular scanning of deployed iis components against known threat databases and maintain updated threat intelligence feeds. The implementation of web application firewalls, input validation controls, and secure configuration baselines can significantly reduce the attack surface. Additionally, organizations should consider adopting zero trust network architectures that limit lateral movement capabilities even if initial compromise occurs, aligning with attack mitigation strategies from the mitre att&ck framework that emphasize defense in depth approaches to protect against iis-based exploitation techniques.