# CVE-2026-73779 — Hewlett Packard Enterprise (HPE) AOS-CX

> As of 2026-09-03, CVE-2026-73779 is a HIGH-severity vulnerability in Hewlett Packard Enterprise (HPE) AOS-CX, CVSS v3.1 8.2, EPSS 0.2% (14.2th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-73779, 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-2026-73779?

Vulnerabilities have been identified in the operating system of AOS-CX switches that could potentially allow an unauthenticated remote actor to circumvent existing authentication controls. Successful exploitation could compromise system integrity and further expose sensitive information.

The record classifies CVE-2026-73779 under weakness class [CWE-269](https://intel.threadlinqs.com/cwe/CWE-269). Its CVSS v3 base vector states that the flaw is reachable from an adjacent network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity. 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:** 8.2 — HIGH (`CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 14.2% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.7/10 — 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-2026-73779 being exploited?

It currently carries a trending score of 29 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-2026-73779

The record marks a vendor fix as available for CVE-2026-73779. Patch reference: [https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US](https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US). Vendor advisory: [https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US](https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US). Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

## Threat activity tracking CVE-2026-73779

1 tracked threat in the Threadlinqs corpus references CVE-2026-73779, 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, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-10. This product uses the NVD API but is not endorsed or certified by the NVD.

**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-2026-73779
Full detection coverage and IOCs for threats exploiting CVE-2026-73779 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp