CVE-2026-79831: hewlett packard enterprise hpe nonstop posix user threads Heap-based Buffer Overflow

Vulnerability summary

CVE-2026-79831 is a medium (CVSS 6.6) Heap-based Buffer Overflow vulnerability in hewlett packard enterprise hpe nonstop posix user threads. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.2% of scored vulnerabilities.

Timeline

1. 15-10-2026
   PublishedVulnerability first disclosed.
2. 15-10-2026
   Last modifiedVulnerability information updated.

Description

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

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().