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HPE CVE-2026-79851

| EUVDEUVD-2026-108351 CRITICAL
Buffer Overflow (CWE-119)
2026-10-22 security-alert@hpe.com GHSA-q9p2-f896-q4cp
10.0
CVSS 3.1 · Vendor: hpe
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach exposed HPE network service
  2. Exploit
    Exploit flaw without authentication
  3. Impact
    Compromise component and adjacent systems

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

The CVSS vector indicates remote, network-based exploitation requiring no authentication (PR:N) and no user interaction (UI:N) at low attack complexity, with a changed scope (S:C) implying impact can reach systems beyond the vulnerable component. However, NO description or CWE was provided, so the specific product feature, protocol, configuration setting or deployment mode that must be present cannot be extracted from the available sources - the exact prerequisite is not described. Limiting factors therefore cannot be confirmed: whether a particular HPE networking service, management interface, or non-default mode must be exposed is unverified and should be read directly from HPE bulletin hpesbnw05162en_us before scoping exposure.

Impact

The signals point in a serious but incompletely corroborated direction. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H, base 10.0) describes a remotely reachable, low-complexity flaw needing no privileges or user interaction, with a changed scope and high impact to confidentiality, integrity and availability - the most severe possible profile. The vuln.today decision label is act_now, which aligns with that severity and argues for immediate remediation. However, several corroborating signals are ABSENT from the supplied data: no EPSS probability is provided, there is no CISA KEV listing, and no PoC or exploit reference appears among the references - only the HPE vendor advisory. Treat exploitation as 'no public exploit identified at time of analysis' rather than active. There is also a conflict to flag: the single tag is 'Information Disclosure', yet the CVSS vector asserts high Integrity AND Availability impact plus a scope change, which is far broader than pure information disclosure - the tag likely understates the flaw, or the vector is generically maximal; verify with the HPE bulletin. Critically, NO description and NO CWE are provided, so the mechanism is unknown. Net: this should be treated as a real high priority on the strength of the vendor act_now label and critical vector, but the lack of EPSS/KEV/PoC means urgency rests on vendor severity rather than demonstrated in-the-wild exploitation.

Exploit ScenarioDerived

Per the CVSS vector, a remote attacker with network reachability to the affected HPE networking product sends crafted traffic to the exposed service and exploits the flaw without authentication or user interaction, gaining high impact to confidentiality, integrity and availability; the changed scope (S:C) means the compromise can extend beyond the vulnerable component to adjacent systems. The precise trigger is not described in the available sources (no description or CWE was provided). No public exploit or PoC reference is present in the supplied data.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet

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AnalysisAIv1 – Oct 22, 2026

HPE security bulletin hpesbnw05162en_us documents a maximum-severity (CVSS 10.0) exposure in an HPE product that is not named in the available data, so the specific affected platform and version range remain unresolved. The assessed vector describes unauthenticated, network-reachable exploitation at low complexity with no user interaction and a changed scope, meaning impact is judged capable of reaching beyond the vulnerable component to give high confidentiality, integrity and availability loss. A single source tag labels the issue as information disclosure, which does not fully reconcile with the High integrity and availability ratings in the vector; no CVE description, CWE, CPE data, KEV entry or public exploit reference was supplied, so active exploitation is not confirmed and no public exploit was identified at time of analysis. The vuln.today priority decision is act_now, driven by the maximum severity score rather than by corroborated in-the-wild activity.

RemediationAI

No vendor-released patch version is identified in the available data, and no fixed-version information, workaround or mitigation is stated in the supplied sources, so the HPE bulletin hpesbnw05162en_us at https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05162en_us&docLocale=en_US is the required first step: it is the only source here that can establish which product and versions are affected and what HPE directs customers to install or disable. Because the record carries no description, no CWE and no CPE data, exposure cannot be scoped from the CVE data alone - the assessed vector (unauthenticated, network-reachable, changed scope) means the practical question is which network-facing HPE component in your estate corresponds to the bulletin's affected list, and that mapping must come from the bulletin rather than from inference. Any interim restriction of that component's network reachability should be weighed against the operational impact of losing management or data-plane access, and should be applied only once the bulletin confirms which interface or service is implicated. Given the act_now decision label and the maximum severity score, treat the bulletin lookup and asset identification as time-sensitive, and note that no public exploit code or KEV entry was identified at time of analysis, so the current urgency rests on severity rather than observed attacks.

Affected VersionsENISA

Unknown product 10.6.0.0 ≤10.7.2.6
Unknown product 10.8.0.0 ≤10.8.1.1
Unknown product 10.3.0.0 ≤10.4.1.13

Affected Packages

euvd unknown_product no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

No CWE was provided, so the root-cause class of this defect cannot be established from the available sources, and the trigger is not described. What can be stated is derived from the vector alone: the flaw is reachable over the network (AV:N) at low attack complexity (AC:L) without credentials (PR:N) and without user interaction (UI:N), and it is assessed with a changed scope (S:C), which in CVSS terms means the exploited component can affect resources under a different security authority - typically another process, host or trust boundary. The accompanying classification as information disclosure suggests the observable effect may be exposure of data, but the High integrity and availability components of the vector indicate the assessment anticipates modification and disruption as well; the sources do not explain the mechanism behind either. Because scope change and unauthenticated network reachability are both assessed, the deployment context matters greatly - whether a management interface, agent service or other network-facing HPE component must be exposed is exactly the detail that the missing description and the absent CPE data would normally supply, and it is not present here. The single reference is an HPE support document (docId hpesbnw05162en_us), which is the authoritative source for the affected product list, the vulnerable versions and the fix.

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Severity by source

Vendor (hpe) PRIMARY 10.0 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
vuln.today AI 10.0 CRITICAL

With no description available, metrics mirror the only evidence (vendor network-reachable, unauthenticated, scope-changing critical flaw); AV/PR/UI and S:C cannot be independently narrowed absent a mechanism.

3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (hpe).

CVSS VectorVendor: hpe

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

No description provided

Executive ViewAI

Why It Matters

HPE has disclosed a maximum-severity vulnerability (CVE-2026-79851) affecting an unspecified product, which could allow unauthenticated attackers to compromise confidentiality, integrity, and availability. Leadership should prioritize immediate action because the issue is remotely exploitable with low complexity and no user interaction, potentially impacting critical business systems. Although no active exploitation has been confirmed, the potential for broad organizational disruption warrants urgent attention.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include restricting network access to affected HPE products, enabling detailed logging and monitoring for exploitation attempts, and applying any vendor-recommended workarounds.

Threat Intelligence Overview

Prevalence
Medium
HPE networking advisory; enterprise appliance but exact product and footprint unidentified
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS N/A
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +50
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

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