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Vulnerabilities

Vulnerability · CVE-2026-79831

A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.

Published Oct 15, 2026 · catalog updated Oct 15, 2026 · Hewlett Packard Enterprise HPE NonStop Posix User Threads

Check if you run it

No confirmed exploitation is on record for CVE-2026-79831. EPSS is 0.11%. Act only if a listed version of Hewlett Packard Enterprise HPE NonStop Posix User Threads 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
Medium6.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.11%
Remediation
Not established
Affected products
vendor Hewlett Packard Enterprise HPE NonStop Posix User Threads

A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.

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 Posix User Threadsversion unspecified

How to fix CVE-2026-79831

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-2026-79831. EPSS is 0.11%. Act only if a listed version of Hewlett Packard Enterprise HPE NonStop Posix User Threads 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-122: Heap-based Buffer Overflow. EPSS 0.11%. 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 heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.

  2. Oct 15, 2026 · NIST NVD

    Updated

    A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.

  3. Oct 15, 2026 · NIST NVD

    Updated

    A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.

Sources

  • CVE.orgVulnerability recordCVE-2026-79831

    A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-79831

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-79831

    A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.

    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.