PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-56583 HCLSoftware CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record for CVE-2026-56583 was published on 2026-07-21T18:17:02.287Z and has not been modified since then. The NVD entry is currently Undergoing Analysis. HCL MyCloud was affected with Concurrent Login Vulnerability, which may increase the risk of unauthorized access, session hijacking, and account misuse. The vulnerability has a CVSS score of 3.1 and a severity of LOW. Security teams and administrators responsible for HCL MyCloud should assess the vulnerability and implement necessary mitigations to prevent potential unauthorized access and session hijacking.

Vendor
HCLSoftware
Product
MyCloud
CVSS
LOW 3.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-21
Original CVE updated
2026-08-03
Advisory published
2026-07-21
Advisory updated
2026-08-03

Who should care

Security teams and administrators responsible for HCL MyCloud should assess the vulnerability and implement necessary mitigations to prevent potential unauthorized access and session hijacking. Operators and platform administrators should review HCL MyCloud deployments for potential exposure and verify vendor guidance.

Technical summary

HCL MyCloud was affected with Concurrent Login Vulnerability, which may increase the risk of unauthorized access, session hijacking, and account misuse. The vulnerability has a CVSS score of 3.1 and a severity of LOW. The CVE record was published on 2026-07-21T18:17:02.287Z and has not been modified since then. Security teams should review HCL MyCloud deployments for potential exposure.

Defensive priority

Low priority, as the vulnerability has a low CVSS score and is not currently being exploited. However, security teams should still assess HCL MyCloud deployments and implement necessary mitigations.

Recommended defensive actions

  • Review and assess the vulnerability in HCL MyCloud
  • Implement necessary mitigations to prevent potential unauthorized access and session hijacking
  • Monitor for any changes to the NVD entry or CVE record
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Evidence notes

The CVE record for CVE-2026-56583 was published on 2026-07-21T18:17:02.287Z and has not been modified since then. The NVD entry is currently Undergoing Analysis. The vulnerability has a CVSS score of 3.1 and a severity of LOW. Evidence is limited to CVE and NVD data. Defenders should verify HCL MyCloud deployments and assess potential exposure with vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-56583 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-56583

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-56583 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-56583

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.