What is the CVSS score of CVE-2026-76683?

CVE-2026-76683 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.6%.

Edgeconnect Sd Wan Orchestrator CVE-2026-76683

EUVD-2026-79209 HIGH

Classic Buffer Overflow (CWE-120)

2026-09-15 security-alert@hpe.com

GHSA-jrfg-vpc7-wmvq

Buffer Overflow Edgeconnect Sd Wan Orchestrator Arubanetworks Hpe Edgeconnect Operating System

8.1

CVSS 3.1 · Vendor: hpe

View

Vulnerability Assessment

Weakness

CWE

CWE-120

ASVS 5.0

V15 - Secure Coding and Architecture Buffer copy size validation

MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 15, 2026

A buffer overflow in the API endpoint of HPE Networking EdgeConnect SD-WAN Gateways allows an unauthenticated remote attacker to execute arbitrary commands on the underlying host, resulting in full operating-system compromise of the appliance. Multiple maintenance trains are affected — 9.4.0.0 through 9.4.8.2, 9.5.0.0 through 9.5.8.1, 9.6.0.0 through 9.6.3.1, and the 9.7.0.0 release. The vendor's own CVSS rating is 8.1 (AV:N/AC:H/PR:N/UI:N), reflecting that exploitation is unauthenticated but gated by preconditions outside the attacker's control; no public exploit code or CISA KEV listing was identified at time of analysis.

Affected VersionsENISA

EdgeConnect SD-WAN Gateways 9.6.0.0 ≤9.6.3.1

EdgeConnect SD-WAN Gateways 9.5.0.0 ≤9.5.8.1

EdgeConnect SD-WAN Gateways 9.7.0.0 ≤9.7.0.0

EdgeConnect SD-WAN Gateways 9.4.0.0 ≤9.4.8.2

Affected Packages

euvd edgeconnect_sd_wan_gateways no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (hpe) PRIMARY 8.1 HIGH

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (hpe) · only source for this CVE.

CVSS VectorVendor: hpe

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Buffer overflow vulnerabilities exist in the API endpoint of HPE Networking EdgeConnect SD-WAN Gateways that could allow an unauthenticated remote attacker to run arbitrary commands on the underlying host if certain preconditions outside of the attacker's control are met. Successful exploitation could allow an attacker to execute arbitrary commands on the underlying operating system leading to complete system compromise.

Threat Intelligence Overview

EPSS Score

0.6%

Top 53% exploitable

Data Quality

4 sources

Confidence: Medium

EUVD 🇯🇵JVN

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.6%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +40

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.