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PatchSiren cyber security CVE debrief

CVE-2026-76664 Hewlett Packard Enterprise CVE debrief

A security vulnerability in HPE NonStop EXPAND may result in out-of-bounds memory read/write operations. Hewlett Packard Enterprise has acknowledged the issue, which affects version T9057L02^AIG and earlier. The CVE Program and NVD have recorded this vulnerability with a CVSS score of 6.4, indicating a medium severity level. Defenders should prioritize verifying the affected version of HPE NonStop EXPAND and assessing exposure, as the vulnerability could lead to potential security risks if exploited. The vulnerability has been documented by the CVE Program and NVD, providing a CVSS score and affected version information. Hewlett Packard Enterprise has also acknowledged the issue,

Vendor
Hewlett Packard Enterprise
Product
HPE NonStop EXPAND
CVSS
MEDIUM 6.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-15
Original CVE updated
2026-10-15
Advisory published
2026-10-15
Advisory updated
2026-10-15

Who should care

Defenders responsible for HPE NonStop EXPAND systems, particularly those using version T9057L02^AIG and earlier, should assess exposure and prioritize verification and potential mitigations.

Why it matters

CVE-2026-76664 is a medium-severity vulnerability in HPE NonStop EXPAND that may allow out-of-bounds memory read/write operations. Defenders should prioritize verifying the affected version, assessing exposure, and implementing recommended mitigations to minimize potential security risks.

  • Verify affected version of HPE NonStop EXPAND to determine exposure.
  • Assess potential attack vectors and security risks associated with the vulnerability.
  • Implement recommended mitigations or patches from Hewlett Packard Enterprise as available.

Technical summary

The HPE NonStop EXPAND vulnerability (CVE-2026-76664) is a medium-severity issue that may allow out-of-bounds memory read/write operations. It affects version T9057L02^AIG and earlier of HPE NonStop EXPAND. The vulnerability has been documented by the CVE Program and NVD, with a CVSS score of 6.4.

Defensive priority

Defenders should prioritize verifying the affected version of HPE NonStop EXPAND and assessing exposure, as the vulnerability could lead to potential security risks if exploited.

Recommended defensive actions

  • Verify the version of HPE NonStop EXPAND in use and compare it to the affected version T9057L02^AIG and earlier.
  • Assess exposure based on the affected version and potential attack vectors.
  • Review and implement recommended mitigations or patches from Hewlett Packard Enterprise as available.

Evidence notes

The CVE Program and NVD have documented this vulnerability, providing a CVSS score and affected version information. Hewlett Packard Enterprise has also acknowledged the issue, confirming its existence and providing a reference to a support page.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76664 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76664

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

  • CVE-2026-76664 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76664

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

Supplemental references

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.