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CVE-2026-76663 Hewlett Packard Enterprise CVE debrief

A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS. The vulnerability affects HPE NonStop TELSERV deployments, and defenders should assess exposure and potential impact. The CVE Program record and NVD vulnerability detail page provide official information about the vulnerability. Defenders should prioritize verifying exposure and assessing potential impact on HPE NonStop TELSERV deployments. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity.

Vendor
Hewlett Packard Enterprise
Product
HPE NonStop TELSERV
CVSS
HIGH 7.5
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 TELSERV deployments should assess exposure and potential impact. This includes operators, platform administrators, vulnerability management teams, and security teams. They should prioritize verifying exposure and assessing potential impact on HPE NonStop TELSERV deployments due to the stack-based buffer overflow vulnerability that may cause memory corruption and DoS. The CVE-2026

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact on HPE NonStop TELSERV deployments due to a stack-based buffer overflow vulnerability that may cause memory corruption and DoS.

  • Potential DoS attacks on HPE NonStop TELSERV deployments
  • Memory corruption may occur due to stack-based buffer overflow

Technical summary

A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS. The vulnerability affects HPE NonStop TELSERV deployments. The CVSS score of 7.5 indicates a HIGH severity vulnerability. Defenders should prioritize verifying exposure and assessing potential impact on HPE NonStop TELSERV deployments due to this vulnerability.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact on HPE NonStop TELSERV deployments.

Recommended defensive actions

  • Verify HPE NonStop TELSERV deployments for exposure
  • Assess potential impact on affected systems
  • Monitor for potential DoS attacks

Evidence notes

The CVE Program record and NVD vulnerability detail page provide official information about the vulnerability. The source item providing details about the vulnerability also supports this information. Defenders should verify the exposure of HPE NonStop TELSERV deployments and assess potential impact. The official CVE Program record with source-provided CVE metadata and the official NIST NVD detail page and source-specific vulnerability assessment are key resources. The CVE record was 7

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76663 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76663

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

  • CVE-2026-76663 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76663

    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.