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HPE AOS-CX EUVDEUVD-2026-69642

| CVE-2026-73779 HIGH
Improper Privilege Management (CWE-269)
2026-09-01 hpe GHSA-2v84-vgfw-7mjr
8.2
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
    Gain adjacency to switch management VLAN
  2. Delivery
    Identify AOS-CX management interface
  3. Exploit
    Trigger authentication bypass condition (AC:H)
  4. Execution
    Authenticate without credentials
  5. Persist
    Exfiltrate switch configuration or credentials
  6. Impact
    Modify routing/ACL configuration for lateral movement

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Least privilege enforcement
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

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

Exploitation Conditions

Exploitation requires network adjacency (layer-2 or same broadcast domain) to the AOS-CX switch management plane - direct internet exploitation is not possible given AV:A. The AC:H metric confirms that specific, undisclosed conditions must be met for the authentication bypass to succeed; these conditions are not detailed in the CVE description or advisory abstract, requiring review of the full HPE bulletin. What limits exploitation: (1) the attacker must have network adjacency to the management interface, which is restricted in properly segmented environments; (2) high attack complexity means exploitation is not opportunistic or scriptable without knowledge of the specific triggering condition; (3) no public exploit code or proof-of-concept is available. Organizations with out-of-band management networks, management-plane VRF separation, or strict administrative ACLs limiting management access to dedicated hosts face substantially lower realistic risk.

Impact

The CVSS 8.2 score reflects genuine severity: unauthenticated exploitation (PR:N) with no user interaction (UI:N) and a scope change (S:C) producing high confidentiality and integrity impacts. However, the AC:H metric is a meaningful constraint - exploitation is not straightforward and requires specific, undisclosed conditions to succeed. The AV:A vector further limits exposure to attackers with network adjacency to the management plane, reducing the attack surface compared to internet-facing services. EPSS data is not provided; without it, broad exploitation likelihood cannot be quantified. No KEV listing and no POC code are identified, suggesting this is not yet actively exploited at scale. Real-world priority is elevated for environments where AOS-CX management interfaces are reachable from untrusted adjacent segments, but lower for organizations with proper out-of-band management or strict management-plane ACLs. The 'Information Disclosure' tag understates the risk - integrity compromise is explicitly described and confirmed by I:H in the CVSS vector.

Exploit ScenarioDerived

An attacker with layer-2 adjacency to the AOS-CX switch management network - such as from a compromised server on the same VLAN - exploits the authentication bypass under specific undisclosed conditions to authenticate without credentials. Once past authentication controls, the attacker reads sensitive switch configuration (routing tables, credentials, network topology) and modifies ACLs or routing configurations, potentially enabling lateral movement across network segments. No public exploit code exists at time of analysis, and AC:H implies the attacker must meet specific triggering conditions.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 01, 2026

Authentication bypass in HPE AOS-CX switch operating system allows an adjacent unauthenticated attacker, under high-complexity conditions, to circumvent authentication controls and achieve both integrity compromise and sensitive information exposure. The scope change in the CVSS vector (S:C) indicates successful exploitation can extend impact beyond the directly targeted switch - relevant in networked environments where a compromised switch becomes a pivot point. No public exploit code or CISA KEV listing is present at time of analysis.

RemediationAI

Consult HPE security bulletin HPESBNW05134en_us at https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US for patched AOS-CX firmware versions and upgrade instructions. No exact fix version is provided in the available CVE data, so patch version must be confirmed directly from the HPE advisory. While patching is pending, restrict access to the AOS-CX management plane by applying strict management-plane ACLs or VRF isolation so that only trusted administrative hosts in dedicated out-of-band networks can reach management interfaces - this directly counters the AV:A prerequisite. Disabling unused management protocols (REST API, SSH, HTTPS) on production switch interfaces reduces the attack surface further, though this may affect legitimate management workflows. Enabling enhanced logging and authentication event monitoring on the switches will aid detection if exploitation attempts occur.

Affected VersionsENISA

AOS-CX 10.18.0000 ≤10.18.0001
AOS-CX 10.10.0000 ≤10.10.1180
AOS-CX 10.17.0000 ≤10.17.1021
AOS-CX 10.16.0000 ≤10.16.1051
AOS-CX 10.13.0000 ≤10.13.1180

Affected Packages

euvd aos_cx 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

AOS-CX is HPE's modern, REST API-driven network operating system deployed on Aruba/HPE CX-series enterprise switches. The CPE (cpe:2.3:a:hewlett_packard_enterprise_(hpe):aos-cx:*:*:*:*:*:*:*:*) covers all versions without a bounded range, indicating broad version exposure. No CWE is assigned, which limits root-cause classification; the description references bypassing 'existing authentication controls,' consistent with CWE-287 (Improper Authentication) or CWE-306 (Missing Authentication for Critical Function). The adjacent-only attack vector (AV:A) means exploitation requires layer-2 adjacency or access to the same network segment as the switch management plane, which is consistent with how switch management interfaces are typically deployed.

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Severity by source

Vendor (hpe) PRIMARY 8.2 HIGH
AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
vuln.today AI 8.2 HIGH

AV:A reflects management-plane adjacency requirement; AC:H reflects undisclosed specific bypass conditions; PR:N as authentication is bypassed; S:C for cross-switch/network impact.

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

Primary rating from Vendor (hpe).

CVSS VectorVendor: hpe

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

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. Successful exploitation could compromise system integrity and further expose sensitive information.

Executive ViewAI

Why It Matters

HPE AOS-CX network switches are vulnerable to an authentication bypass allowing adjacent attackers to gain unauthorized access and compromise network configuration and integrity. While no public exploit identified at time of analysis, the absence of available vendor patches creates significant risk of network infiltration and lateral movement within interconnected infrastructure.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: restrict management interface access via ACLs and VLAN isolation, disable unnecessary management protocols, implement network segmentation separating switch management from untrusted user-facing infrastructure, enable comprehensive logging and alerting on authentication attempts and configuration changes, and consider temporary isolation of non-critical switches until patches become available.

Threat Intelligence Overview

EPSS Score
0.2%
Top 93% exploitable
Prevalence
Medium
HPE Aruba CX-series enterprise switches, common but not ubiquitous
Data Quality
5 sources
Confidence: Medium

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 HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Controlled
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

41
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +41
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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