What is CVE-2026-73793?

CVE-2026-73793 is a high-severity vulnerability in Hewlett Packard Enterprise HPE Nonstop Middleware, classified under Deserialization of Untrusted Data. CVSS score: 7.9/10. Published 2026-10-14.

How severe is CVE-2026-73793?

High severity. CVSS v3 base score is 7.9 out of 10.

Deserialization in Hewlett Packard Enterprise HPE Nonstop Middleware

CVE-2026-73793

HPE NonStop Middleware software has secret key handling and data deserialization vulnerability.

Vulnerability class: Insecure Deserialization

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 7.9 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Hewlett Packard Enterprise HPE Nonstop Middleware — versions T1155L01^AAF and earlier

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

support.hpe.com/hpesc/public/docDisplay

Frequently asked questions

What is CVE-2026-73793?: CVE-2026-73793 is a high-severity vulnerability in Hewlett Packard Enterprise HPE Nonstop Middleware, classified under Deserialization of Untrusted Data. CVSS score: 7.9/10. Published 2026-10-14.
How severe is CVE-2026-73793?: High severity. CVSS v3 base score is 7.9 out of 10.