Buffer overflow in Hewlett Packard Enterprise (HPE) Aos-Cx

CVE-2026-73783

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.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (36.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-73783: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-73783?
CVE-2026-73783 is a medium-severity vulnerability in Hewlett Packard Enterprise (HPE) Aos-Cx, classified under Stack-based Buffer Overflow. CVSS score: 4.9/10. Published 2026-09-01.
How severe is CVE-2026-73783?
Medium severity. CVSS v3 base score is 4.9 out of 10.