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HPE AOS-CX CVE-2026-73764

| EUVDEUVD-2026-69628 HIGH
Improper Authentication (CWE-287)
2026-09-01 hpe GHSA-hr8p-9qx4-wjg9
7.1
CVSS 3.1 · Vendor: hpe
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Severity by source

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

Adjacent-network reach limits exposure; auth bypass with no privileges needed drives PR:N; no confidentiality impact per description.

3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/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
High
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Sep 01, 2026 - 21:04 vuln.today
CVE Published
Sep 01, 2026 - 20:28 cve.org
HIGH 7.1

DescriptionCVE.org

Vulnerabilities have been identified in the operating system of AOS-CX switches that could potentially allow an unauthenticated remote actor to circumvent existing authentication controls. In some cases this could enable unauthorized modification of affected resources and limited disruption of affected services.

AnalysisAI

Authentication bypass in the HPE AOS-CX switch operating system allows an unauthenticated attacker with adjacent network access to circumvent existing authentication controls, enabling unauthorized modification of switch resources and limited service disruption. Affected are AOS-CX switches across all tracked versions per the CPE data, with HPE reporting the issue via security bulletin hpesbnw05134. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation The attacker must be on the same network segment (Layer-2 adjacent) as the AOS-CX switch management interface - this is the primary limiting condition enforced by the AV:A CVSS metric. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L) yields a score of 7.1, which reflects accurately constrained real-world exploitability: the adjacent-network requirement means an attacker must already be on the same Layer-2 segment or VLAN as the switch management interface, significantly reducing the exposed population relative to a fully internet-facing service. … 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 Consult the HPE security bulletin at https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US for the official patch and affected version details; no specific fixed firmware version is present in the available input data so a patched version cannot be cited here. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: conduct a complete inventory of all HPE AOS-CX switches, documenting firmware versions and identifying devices accessible from adjacent networks; implement emergency access restrictions to management interfaces. …

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CVE-2026-73764 vulnerability details – vuln.today

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