CVE-2026-79831
HPE NonStop Posix User Threads - Heap buffer overflow vulnerability
A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
HPE NonStop Posix User Threads - Heap buffer overflow vulnerability
A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.
- Record
CVE-2026-79831- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H - Weakness
- CWE-122
- Updated
- 2026-11-02
EUVDEUVD-2026-102002
A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.
- Record
EUVD-2026-102002- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-5wpv-46m6-vrc3
A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.
A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.
- Record
GHSA-5wpv-46m6-vrc3- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H - Weakness
- CWE-122
- Updated
- 2026-11-02
NVD
A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.
- Record
CVE-2026-79831- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H - Weakness
- CWE-122
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-79831 is a medium vulnerability (CVSS 6.6) in Hewlett Packard Enterprise Hpe Nonstop Posix User Threads, published October 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. No source names a fixed version.