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HPE AOS-CX CVE-2026-73759

| EUVDEUVD-2026-69623 MEDIUM
Uncontrolled Resource Consumption (CWE-400)
2026-09-01 hpe GHSA-x4q2-qmmg-jcfr
6.5
CVSS 3.1 · Vendor: hpe
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Severity by source

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

Adjacent vector confirmed by description; unauthenticated DoS with no confidentiality or integrity impact matches A:H/C:N/I:N.

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

Primary rating from Vendor (hpe).

CVSS VectorVendor: hpe

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Metadata Corrected
Sep 01, 2026 - 21:40 vuln.today
tag: Information Disclosure replaced by Denial Of Service
Analysis Generated
Sep 01, 2026 - 21:19 vuln.today

DescriptionCVE.org

Vulnerabilities in AOS-CX could allow an unauthenticated remote malicious actor to trigger a denial-of-service condition by sending specially crafted packets. Successful exploitation of these vulnerabilities results in disruption of normal operation on affected devices.

AnalysisAI

Unauthenticated denial-of-service in HPE AOS-CX allows an adjacent-network attacker to crash or disrupt affected switches by sending specially crafted packets, resulting in loss of normal network operations. The vulnerability requires no credentials and no user interaction, making it exploitable by any actor with access to the same Layer-2 or adjacent network segment. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Persist
technique details hidden
Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation Attacker must be on the same network segment (Layer-2 adjacency or equivalent) as the target AOS-CX switch - this is the primary limiting condition imposed by AV:A. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 6.5 (AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) correctly characterizes a medium-severity, adjacency-constrained DoS. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the patch(es) identified in HPE security bulletin HPESBNW05134, available at https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-73759 vulnerability details – vuln.today

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