---
title: "CVE-2026-73793: HPE NonStop Middleware - Insecure Deserialization & Broken Authentication"
description: "HPE NonStop Middleware contains a secret key handling and insecure deserialization vulnerability, letting attackers potentially tamper with data or escalate privileges, exploit requires specific conditions not detailed."
url: https://panop.io/threat-heartbeat/CVE-2026-73793/
---

# CVE-2026-73793 HPE NonStop Middleware - Insecure Deserialization & Broken Authentication

HPE NonStop Middleware contains a secret key handling and insecure deserialization vulnerability, letting attackers potentially tamper with data or escalate privileges, exploit requires specific conditions not detailed.

CVSS base score 7.9 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.36% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-73793)

## Details

Type

Insecure Deserialization

Impact

Data Tampering, Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:H

Published

14 October 2026

Updated

15 October 2026

Weakness

[CWE-502](https://cwe.mitre.org/data/definitions/502.html)

## Vendor fix

Update to the latest version or apply vendor patches addressing secret key handling and deserialization issues.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-73793](https://nvd.nist.gov/vuln/detail/CVE-2026-73793)
- [https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbns05148en\_us&docLocale=en\_US](https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbns05148en_us&docLocale=en_US)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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