PatchTheCVECVE-2026-73773: An unauthenticated Denial-of-Service (DoS) vulnerability exists in the API endpoint of AOS-CX
CVE-2026-73773 is a high-severity flaw (CVSS 7.5) affecting arubaos-cx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 60%) |
| CISA exploited list | No |
| Weakness | CWE-400 |
| Published | 2026-09-01 |
| Last modified | 2026-09-04 |
Last updated 2026-09-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-73773?
arubaos-cx: upgrade to newer than 10.17.1021. Exact commands for each OS are on this page.
Is CVE-2026-73773 being exploited?
CVE-2026-73773 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-73773 affect?
CVE-2026-73773 affects arubaos-cx. Severity is high (CVSS 7.5). 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.
How urgent is CVE-2026-73773?
Priority 41/100. High severity; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2026-44880 HIGH 8.8 UPGRADE A buffer overflow vulnerability was found in the command line interface of AOS-CX
- CVE-2026-63454 HIGH 7.2 UPGRADE An authenticated path traversal vulnerability exists in AOS-CX
- CVE-2026-63453 HIGH 7.2 UPGRADE Buffer overflow vulnerabilities exist in the command line interface of AOS-CX
- CVE-2026-73783 MEDIUM 4.9 UPGRADE Stack overflow vulnerabilities exist in an API endpoint of AOS-CX
- CVE-2026-73749 CRITICAL 9.8 UPGRADE Multiple vulnerabilities exist in a daemon of AOS-CX that may allow for improper processing of malformed input