AOS-CX: Improper Authentication
CVE-2026-73764 is a high-severity improper authentication vulnerability in AOS-CX from Hewlett Packard Enterprise, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected AOS-CX versions: 10.18.0000 through 10.18.0001; 10.17.0000 through 10.17.1021; 10.16.0000 through 10.16.1051, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.31% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of AOS-CX you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on support.hpe.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Hewlett Packard Enterprise | AOS-CX | 10.18.0000 through 10.18.0001; 10.17.0000 through 10.17.1021; 10.16.0000 through 10.16.1051; 10.13.0000 through 10.13.1180; 10.10.0000 through 10.10.1180 | Not stated |
| Hewlett Packard Enterprise | Arubaos-cx | 10.10.1180 and earlier; 10.13.0000 through 10.13.1180; 10.16.0000 through 10.16.1051; 10.17.0000 through 10.17.1021; 10.18.0001 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- HighData or code can be modified at will.
- Availability
- LowPerformance or availability is reduced.
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L. Scored by CNA (hpe.com).
Official description
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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in AOS-CX
- 8.8 High severity
- 8.4 High severity
- 8.3 High severity
- 8.2 High severity
- 9.8 Critical severity
- 8.1 High severity
Recent Improper Authentication vulnerabilities
- 7.3 High severity
- 7.5 High severity
- 10.0 Critical severity
- 10.0 Critical severity
- 9.6 Critical severity
- 8.8 High severity
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