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AOS-S EUVDEUVD-2026-93876

| CVE-2026-76749 MEDIUM
Information Exposure (CWE-200)
2026-10-06 security-alert@hpe.com GHSA-rjjv-xg7f-54c4
6.5
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
    Reach AOS-S management interface over network
  2. Exploit
    Send crafted request to vulnerable service
  3. Impact
    Retrieve disclosed sensitive information

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

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

Exploitation Conditions

The attacker needs network access to the AOS-S device's affected service/management plane. The supplied description does not name the exact feature, protocol, port, or configuration mode involved, so the specific vulnerable surface cannot be stated with precision from available data - verify against HPE advisory hpesbnw05156en_us. Limiting/clarifying factors: the CVSS vector specifies PR:L (some privilege required) and no user interaction (UI:N), but the description claims the attacker is unauthenticated; this authentication precondition is unresolved and materially changes exploitability. Impact is confined to confidentiality (C:H, I:N, A:N) - no code execution, data tampering, or denial of service results directly from this flaw.

Impact

This is a moderate-priority information-disclosure flaw whose signals are partially conflicting and thin. The provided CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, base 6.5) describes a network-reachable, low-complexity attack that requires LOW privileges (PR:L) and yields HIGH confidentiality impact with no integrity or availability effect. However, the NVD/vendor description explicitly states an 'unauthenticated remote attacker' - this directly contradicts PR:L in the vector. This discrepancy must be resolved with HPE before prioritization: if exploitation is truly unauthenticated, real-world risk and the correct CVSS are higher (base ~7.5) than the stated 6.5. No EPSS score, no CISA KEV listing, and no public POC were provided, so there is no public exploit identified at time of analysis and no evidence of active or automatable exploitation. Net: a network-exposed confidentiality bug on enterprise switching gear that warrants patching in a normal cycle, but the exploitation probability appears low and the authentication precondition is unresolved. Treat the 'unauthenticated' claim as the worst case until the vendor clarifies.

Exploit ScenarioDerived

A remote attacker with network reachability to the management plane of an HPE Aruba AOS-S switch sends a crafted request to a vulnerable service and receives sensitive information (e.g., configuration or credential-adjacent data) in the response. The CVSS vector's low attack complexity (AC:L) and network vector (AV:N) mean no special timing or conditions are needed, though the vector's PR:L implies some level of access that the description's 'unauthenticated' wording disputes. No public exploit code was provided in the intelligence.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 06, 2026

Sensitive information disclosure in AOS-S (HPE Aruba switching platform) could let a remote attacker read confidential data from an affected device's management surface, as documented in HPE advisory hpesbnw05156en_us. The vendor description characterizes the attacker as unauthenticated, while the published CVSS 3.1 vector carries PR:L (some privilege required); our independent assessment resolves the vector to PR:N with a resulting score of 7.5, but that authentication precondition remains genuinely unresolved and materially changes exploitability, so it should be verified against the advisory before risk is finalized. Exploitation is confined to confidentiality (C:H) with no integrity or availability impact, and no public exploit code or CISA KEV entry was identified at time of analysis, placing this in a moderate, patch-and-segment priority tier.

RemediationAI

No vendor-released patch or fixed version is identified in the supplied data, so the first action is to open HPE advisory hpesbnw05156en_us (https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05156en_us&docLocale=en_US) and confirm whether a patched AOS-S firmware release exists for each affected model; if one does, upgrade to that exact version and do not assume an interim release contains the fix without reading the advisory. Until a fix is applied, the effective compensating controls are exposure-reduction measures on the management plane: place switch management interfaces behind an out-of-band management VLAN and restrict reachability with ACLs to jump hosts (trade-off: administrators lose direct browser/SSH access and must route through bastions), disable management services that are not strictly required - Telnet, plain HTTP, SNMPv1/v2c, and any unused web/status endpoints (trade-off: you lose monitoring/telemetry from those protocols and must migrate to SNMPv3 or HTTPS), and where practical bind management listeners to specific trusted interfaces rather than any-address. Because the impact is confidentiality-only, prioritize post-change detection: review switch and syslog/AAA logs for unexpected reads of management endpoints from non-administrative source addresses, and rotate credentials or SNMP community strings that were exposed to a management interface that may have been queried. Note that none of these controls remediate the underlying flaw - they only reduce reachability - so patched firmware remains the required end state.

Affected VersionsENISA

AOS-Switch (AOS-S) 16.11.0000 ≤16.11.0031

Affected Packages

euvd aos_switch_aos_s 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-S is the firmware family for HPE Aruba's switch line, whose attack surface is primarily the management/control plane (web UI, SSH, SNMP, and similar administrative services). The flaw is an information-exposure weakness in that plane: some service or interface returns data to a caller that should not be readable by an actor at the caller's privilege level. The supplied data records no CWE, no CPE identifiers, and no product/version ranges, so the exact vulnerable feature, protocol, port, or configuration mode cannot be pinpointed from available intelligence - the root cause class is best described only generically as improper exposure of sensitive information, and any specific mechanism (e.g., verbatim error leakage, unauthenticated status endpoint, or credential/hash exposure) is an inference that must be confirmed against HPE advisory hpesbnw05156en_us. Because the vector is C:H/I:N/A:N, the defect is a read-only confidentiality break: there is no code execution, no configuration tampering, and no denial-of-service component, which constrains an attacker to reconnaissance, credential/secret harvesting, or data exfiltration rather than device takeover.

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Severity by source

Vendor (hpe) PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
vuln.today AI 7.5 HIGH

Description explicitly states an unauthenticated remote attacker, so AV:N/PR:N/AC:L; impact is confidentiality-only (C:H, I:N, A:N); note this conflicts with the input vector's PR:L.

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

DescriptionCVE.org

A sensitive information disclosure vulnerability exists in AOS-S. Successful exploitation could allow an unauthenticated remote attacker to access sensitive information.

Threat Intelligence Overview

EPSS Score
0.4%
Top 68% exploitable
Prevalence
High
ArubaOS-Switch runs on widely deployed HPE Aruba enterprise switches
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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