CVE-2026-76703: Authenticated Buffer Overflow Vulnerability in HPE Networking EdgeConnect SD-WAN Gateways Web-Based Management Interface Causes Denial-of-Service

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-15 · updated 2026-09-28
Weakness: CWE-120

Description

A buffer overflow vulnerability exists in the web-based management interface of HPE Networking EdgeConnect SD-WAN Gateways that could allow an authenticated attacker with administrative access to cause a denial of service. Successful exploitation could allow an attacker to disrupt system operations, potentially resulting in an unstable system state.

Affected products

Hewlett Packard Enterprise (HPE) EdgeConnect SD-WAN Orchestrator: from 9.4.0 before 9.4.11; from 9.5.0 before 9.5.9; from 9.6.0 before 9.6.4; 9.7.0 — fixed in 9.4.11, 9.5.9, 9.6.4
HPE Edgeconnect Operating System: from 9.4.0.0 before 9.4.9.0; from 9.5.0.0 before 9.5.9.0; from 9.6.0.0 before 9.6.4.0; 9.7.0.0 — fixed in 9.4.9.0, 9.5.9.0, 9.6.4.0

How to fix

Upgrade to a fixed version: Hewlett Packard Enterprise (HPE) EdgeConnect SD-WAN Orchestrator 9.4.11, 9.5.9, 9.6.4; HPE Edgeconnect Operating System 9.4.9.0, 9.5.9.0, 9.6.4.0. Check the vendor advisory for mitigations.

References

https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05135en_us&docLocale=en_US

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