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Vulnerabilities

Vulnerability · CVE-2026-76663

A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS.

Published Oct 15, 2026 · catalog updated Oct 15, 2026 · Hewlett Packard Enterprise HPE NonStop TELSERV

Check if you run it

No confirmed exploitation is on record for CVE-2026-76663. EPSS is 0.27%. Act only if a listed version of Hewlett Packard Enterprise HPE NonStop TELSERV is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.27%
Remediation
Not established
Affected products
vendor Hewlett Packard Enterprise HPE NonStop TELSERV

A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Hewlett Packard Enterprise HPE NonStop TELSERVversion unspecified

How to fix CVE-2026-76663

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-76663. EPSS is 0.27%. Act only if a listed version of Hewlett Packard Enterprise HPE NonStop TELSERV is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-121: Stack-based Buffer Overflow. EPSS 0.27%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2026 · NIST NVD

    Detected

    A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS.

  2. Oct 15, 2026 · NIST NVD

    Updated

    A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS.

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-76663

    A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS.

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2026-76663

    A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS.

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-76663

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-76663

    A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.