AOS-CX: Improper Authentication
CVE-2026-73777 is a high-severity improper authentication vulnerability in AOS-CX from Hewlett Packard Enterprise, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the 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 0.46% 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.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
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
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- 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
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (hpe.com).
Official description
Vulnerabilities have been identified in the API endpoint of AOS-CX switches that could potentially allow an unauthenticated remote actor to circumvent existing authentication controls.
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: total).
- 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
- 7.9 High severity
Recent Improper Authentication vulnerabilities
- 7.3 High severity
- 7.5 High severity
- 7.1 High severity
- 10.0 Critical severity
- 10.0 Critical severity
- 9.6 Critical severity
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