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CVE-2026-76656 Hewlett Packard Enterprise CVE debrief

CVE-2026-76656 is a medium-severity vulnerability in HPE NonStop TCP/IP UTILITIES that could allow an unauthenticated remote attacker to cause a denial of service when traceroute is executed under certain conditions. The vulnerability has a CVSS score of 5.3 and is classified as medium severity. Defenders responsible for HPE NonStop TCP/IP UTILITIES deployments, especially those utilizing traceroute functionality, should assess potential exposure and impact. The CVE record and source item provide limited information on affected versions and exploitation details, requiring verification from official sources. Official CVE Program records and NIST NVD detail pages should be reviewed.

Vendor
Hewlett Packard Enterprise
Product
HPE NonStop TCP/IP UTILITIES
CVSS
MEDIUM 5.3
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 TCP/IP UTILITIES deployments, especially those utilizing traceroute functionality, should assess potential exposure and impact.

Why it matters

CVE-2026-76656 is a medium-severity vulnerability in HPE NonStop TCP/IP UTILITIES that could allow an unauthenticated remote attacker to cause a denial of service when traceroute is executed under certain conditions. Defenders should prioritize verifying exposure, assessing potential impact, and monitoring for potential denial of service incidents.

  • Potential denial of service incidents require monitoring and incident response readiness
  • Verification of HPE NonStop TCP/IP UTILITIES versions and traceroute execution conditions is necessary
  • Defenders should assess potential impact on business operations and prioritize remediation efforts

Technical summary

A vulnerability in HPE NonStop TCP/IP UTILITIES could allow an unauthenticated remote attacker to cause a denial of service when traceroute is executed under certain conditions. The vulnerability has a CVSS score of 5.3 and is classified as medium severity.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact on HPE NonStop TCP/IP UTILITIES deployments, especially where traceroute functionality is utilized.

Recommended defensive actions

  • Verify HPE NonStop TCP/IP UTILITIES version T8602L01^BAA and earlier for potential exposure
  • Assess traceroute execution conditions in deployments
  • Monitor for potential denial of service incidents

Evidence notes

The CVE record and source item provide limited information on affected versions and exploitation details, requiring verification from official sources.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76656 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76656

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

  • CVE-2026-76656 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76656

    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.