CVE-2026-73783 Authenticated Stack Overflow Vulnerabilities lead to Denial-of-Service in AOS-CX
An authenticated attacker can trigger a stack overflow in an API endpoint, causing a denial-of-service condition on HPE AOS-CX network devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73783?
CVE-2026-73783 is a medium-severity denial of service vulnerability in Hpe Arubaos-Cx, published on 1 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Stack overflow vulnerabilities exist in an API endpoint of AOS-CX. Successful exploitation could allow an authenticated malicious actor to cause a denial-of-service condition on the affected system.
Weakness: CWE-121
Which versions are affected by CVE-2026-73783?
It affects 1 product.
Products include Hpe Arubaos-Cx.
How do I fix CVE-2026-73783?
No fix has been published for CVE-2026-73783 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-2026-73783 being exploited?
There is no known exploitation of CVE-2026-73783 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-mfg8-9hq6-x4x4.