CVE-2026-73773 Unauthenticated Denial-of-Service (DoS) Vulnerability in AOS-CX
Unauthenticated attackers can cause a denial of service on HPE AOS-CX network devices via the API endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73773?
CVE-2026-73773 is a high-severity denial of service vulnerability in Hpe Arubaos-Cx, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated Denial-of-Service (DoS) vulnerability exists in the API endpoint of AOS-CX. Successful exploitation of this vulnerability results in the ability to interrupt the normal operation of the affected service.
Weakness: CWE-400
Which versions are affected by CVE-2026-73773?
It affects 1 product.
Products include Hpe Arubaos-Cx.
How do I fix CVE-2026-73773?
No fix has been published for CVE-2026-73773 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-73773 being exploited?
There is no known exploitation of CVE-2026-73773 in the wild and no public exploit code.
Other vulnerabilities in Hpe Arubaos-Cx
- CVE-2026-73749 Unauthenticated Buffer Overflow Vulnerabilities lead to Remote Code Execution in AOS-CX
- CVE-2026-23813 Authentication Bypass in Web Interface allows Unauthenticated Admin Password Reset
- CVE-2026-73750 Authenticated Buffer Overflow Vulnerabilities in AOS-CX API Endpoint Leads to Possible Code Execution
- CVE-2026-73751 Authenticated Remote Command Injection in AOS-CX Web-based Management Interface
- CVE-2026-73752 Unauthenticated Arbitrary File Write Vulnerability Leads to Remote Code Execution in AOS-CX
Sources
Also known as GHSA-fqgw-w56w-3p2h.