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HPE AOS-CX CVE-2026-73761

| EUVDEUVD-2026-69625 MEDIUM
Out-of-bounds Read (CWE-125)
2026-09-01 hpe GHSA-9gc3-rq2g-pggv
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:H/I:N/A:N
vuln.today AI
6.5 MEDIUM

Adjacent-only reach, no auth needed, crafted packet triggers read-only memory disclosure with no integrity or availability impact.

3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Metadata Corrected
Sep 01, 2026 - 21:40 vuln.today
tag: Buffer Overflow removed
Analysis Generated
Sep 01, 2026 - 21:21 vuln.today

DescriptionCVE.org

An out-of-bounds read vulnerability exists in the underlying operating system of AOS-CX that could lead to unauthenticated information disclosure by sending a specially crafted packet. Successful exploitation of this vulnerability results in the ability to disclose sensitive information from the underlying operating system.

AnalysisAI

Out-of-bounds read in the HPE AOS-CX network operating system allows adjacent unauthenticated attackers to disclose sensitive OS memory contents by sending a specially crafted packet. The flaw requires no credentials and no user interaction, but is constrained to same-segment network access (AV:A), limiting exposure to attackers who have already achieved a foothold on the target network or VLAN. …

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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 Layer-2 network segment (broadcast domain, VLAN, or directly connected subnet) as the targeted AOS-CX interface - the Adjacent vector (AV:A) enforces this hard prerequisite. … 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:H/I:N/A:N) is well-calibrated for this finding. … 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 specified in HPE Security Bulletin HPESBNW05134 (https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US), which addresses this vulnerability alongside the more severe co-disclosed RCE flaws in the same AOS-CX codebase - the upgrade path resolves all of them simultaneously. … 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-2026-73761 vulnerability details – vuln.today

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