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HPE AOS-CX CVE-2026-73756

| EUVDEUVD-2026-69620 MEDIUM
Cleartext Transmission of Sensitive Information (CWE-319)
2026-09-01 hpe GHSA-34pg-qqrj-463j
5.9
CVSS 3.1 · Vendor: hpe
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Severity by source

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

MITM positioning requirement justifies AC:H; no attacker authentication needed; only confidentiality impact from passive interception with no integrity or availability effect.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:H/AT:P/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
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

1
Analysis Generated
Sep 01, 2026 - 21:19 vuln.today

DescriptionCVE.org

A vulnerability in an API endpoint of AOS-CX could allow a remote unauthenticated attacker to obtain sensitive information via a man-in-the-middle attack. Successful exploitation allows an attacker to retrieve data which could be used to further compromise the confidentiality of the affected system.

AnalysisAI

Information disclosure in HPE AOS-CX exposes sensitive API endpoint data to a remote unauthenticated attacker who can achieve a man-in-the-middle position on the network path. Intercepted data could include credentials, session tokens, or configuration material usable to further compromise the affected switch or pivot into managed network infrastructure. …

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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 Exploitation requires the attacker to successfully position themselves as a man-in-the-middle on the network path between a legitimate API client and the AOS-CX management endpoint - this is the AC:H constraint that most limits real-world exploitability. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 5.9 (Medium) accurately reflects the real-world exploitation bar: AC:H captures the mandatory MITM network-positioning prerequisite, which substantially limits opportunistic attack. … 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 HPE security bulletin hpesbnw05134en_us (https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US) for vendor-released AOS-CX software updates; no exact fixed version number is available in the current input data, so the advisory is the definitive source for patch version confirmation. … 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-2026-73756 vulnerability details – vuln.today

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