CVE-2026-79831

HPE NonStop Posix User Threads - Heap buffer overflow vulnerability

CVSS score

6.6

EPSS probability

—

Risk score

0.7

Published

3 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-79831: HPE NonStop Posix User Threads Heap Buffer Overflow Vulnerability

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A heap buffer overflow vulnerability identified in HPE NonStop Posix User Threads may allow arbitrary code execution by local users. S0

Why does it matter?

This vulnerability is critical because it may enable a local attacker to achieve code execution and compromise system integrity within the affected environment. S0

What should be done?

Follow the vendor advisory for updates S0
Check manufacturer bulletins for patch status S0

Chain of evidence and sources2 verified claims

HPE NonStop Posix User Threads üzerinde rastgele kod yürütmeye izin verebilecek bir yığın tabanlı tampon taşması zafiyeti bulunmaktadır. S0

S0 · daybreach-canonical

Zafiyet T1280L02^ACG ve önceki sürümleri etkilemekte olup yama durumu belirsizdir. S0

S0 · daybreach-canonical

Show the technical text from the sources

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

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CWE: CWE-122

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-79831 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	Hewlett Packard Enterprise	HPE NonStop Posix User Threads	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
6.6	CVSS V31	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H	NVD
6.6	CVSS V3_1	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-79831 is associated with the following CWEs:

CWE-122: Common Weakness Enumeration Entry CWE-122

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-79831 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim

PermissionsLow

UserGerekmiyor

Official Sources and Advisories

https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbns05148en_us&docLocale=en_USvendor-advisory

CVSS Vector Radar Chart

6.6 / 10

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow privileges

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

Hewlett Packard Enterprise

Weakness Type (CWE & CAPEC)

CWE-122

Similar Vulnerabilities

8.7

CVE-2026-76660

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