# CVE-2026-73753 — Hewlett Packard Enterprise (HPE) AOS-CX

> As of 2026-09-03, CVE-2026-73753 is a HIGH-severity vulnerability in Hewlett Packard Enterprise (HPE) AOS-CX, CVSS v3.1 8.8, EPSS 0.6% (50.3th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-73753, most recently “HPE Patches Critical ArubaOS-CX Buffer Overflow (CVE-2026-73749) Enabling Unauthenticated Remote Code Execution”.

**Last updated:** 2026-09-03

## What is CVE-2026-73753?

Exploitation through affected command-line operations could allow an authenticated low-privileged user to execute arbitrary commands as a privileged user on the underlying operating system.

The record classifies CVE-2026-73753 under weakness class [CWE-78](https://intel.threadlinqs.com/cwe/CWE-78). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 54 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.8 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **EPSS (FIRST):** 0.6% probability of exploitation in the next 30 days, higher than 50.3% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-01, last modified 2026-09-03

## Is CVE-2026-73753 being exploited?

It currently carries a trending score of 38 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Hewlett Packard Enterprise (HPE)](https://intel.threadlinqs.com/vendors/hewlett-packard-enterprise-hpe): AOS-CX

## How to fix CVE-2026-73753

No vendor patch reference has been recorded for CVE-2026-73753 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-73753

1 tracked threat in the Threadlinqs corpus references CVE-2026-73753, either in the campaign’s CVE list or as an indicator on the campaign record.

- [HPE Patches Critical ArubaOS-CX Buffer Overflow (CVE-2026-73749) Enabling Unauthenticated Remote Code Execution](https://intel.threadlinqs.com/threat/TL-2026-2314) — CRITICAL · 2026-09-03

## Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-10.

**Other references**

- [support.hpe.com](https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-73753
Full detection coverage and IOCs for threats exploiting CVE-2026-73753 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp