CVE-2026-76665

HPE NonStop EXPAND - Buffer Overflow vulnerability

CVSS score

7.1

EPSS probability

%0.2

Risk score

0.0

Published

17 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

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

Checking session…

Vulnerability description

CVE AI research

The stored explanation is shown at once; refreshing evaluates the sources again.

DayBreach AI Explanation

Verified against sources

CVE-2026-76665 – HPE NonStop EXPAND Out-of-bounds Read

Sources read

Source agreement

Tam uyum

Evidence confidence

%53

Short explanation

An out-of-bounds read flaw in HPE NonStop EXPAND can lead to a buffer overflow. It carries a CVSS 7.1 (HIGH) score; no active exploitation is reported and patch status is unknown (S0).

Why does it matter?

A buffer overflow may allow an attacker to execute unauthorized code and compromise data integrity or availability.

What should be done?

Monitor the vendor advisory (S0)
Apply patches when released (S0)
Implement network segmentation and access controls
Deploy IDS/IPS for monitoring and anomaly detection

Note on uncertainty

The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.

Chain of evidence and sources2 verified claims

CVE-2026-76665, HPE NonStop EXPAND bileşeninde out-of-bounds okuma hatası içerir ve CVSS 7.1 (HIGH) puanına sahiptir.

S0 · daybreach-canonical

Bu zafiyet için aktif istismar rapor edilmemiştir ve yama durumu resmi kaynaklarda doğrulanamamıştır (status:UNKNOWN).

S0 · daybreach-canonical

Show the technical text from the sources

A security vulnerability in HPE NonStop EXPAND may cause out-of-bounds memory read resulting in buffer overflow.

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

CWE: CWE-125

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-2026-76665 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	Hewlett Packard Enterprise	HPE NonStop EXPAND	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
7.1	CVSS V31	HIGH	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H	NVD
7.1	CVSS V3_1	HIGH	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/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-2026-76665 is associated with the following CWEs:

CWE-125: Out-of-bounds Read

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-2026-76665 weaknesses.

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

Attack Vector and Accessibility

ExposureBitişik ağ

PermissionsGerekmiyor

UserGerekmiyor

Official Sources and Advisories

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

CVSS Vector Radar Chart

7.1 / 10

Vulnerability Scoring Details

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

Attack VectorAdjacent network

Attack ComplexityHigh

Privileges RequiredNone required

User InteractionNone required

Confidentiality (Gizlilik)High

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-125

Similar Vulnerabilities

7.6

CVE-2026-79832

Get this vulnerability through the API

Affected products, version ranges, exploitation status and patch information in a single request, with a free key.

Get a free key Documentation

curl -H "x-api-key: $DAYBREACH_API_KEY" \
  "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-76665"