What is the CVSS score of EUVD-2026-80093?

EUVD-2026-80093 has a CVSS 4.0 base score of 7.5 (High). CVSS vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. EPSS exploitation probability: 0.2%.

Is there a patch available for EUVD-2026-80093?

Yes, a patch is available for EUVD-2026-80093. Update the affected software to the latest version immediately.

Velocloud Edge EUVD-2026-80093

| CVE-2026-86109 HIGH

Improper Verification of Cryptographic Signature (CWE-347)

2026-09-16 Arista

GHSA-gqff-2qm6-5664

Authentication Bypass Jwt Attack Arista Networks Velocloud Edge

7.5

CVSS 4.0 · Vendor: Arista

View

Vulnerability Assessment

Weakness

CWE

CWE-347

OWASP Top 10:2025

A04:2025 - Cryptographic Failures

ASVS 5.0

V11 - Cryptography Signature verification

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

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 16, 2026

Improper cryptographic signature verification in the VeloCloud Edge (Arista, formerly VMware/Broadcom SD-WAN) software update workflow allows an attacker who can either upload packages to VeloCloud Orchestrator or authenticate directly to an Edge to install unauthorized software on the appliance. Because the update workflow does not constrain which digest algorithm is used to verify artifacts, a bundle signed with an unexpected or weak digest can be accepted as legitimate, resulting in arbitrary code execution with the privileges of the update process on the SD-WAN edge node. No public exploit code and no CISA KEV listing were present in the provided intelligence, although the required access level (CVSS 4.0 PR:H) means the flaw is most dangerous to insiders or anyone who has already compromised an operator account.

Affected VersionsENISA

VeloCloud Edge 0.0.0 <5.2.0

VeloCloud Edge 6.4.0 ≤6.4.1.x

VeloCloud Edge 5.2.0 ≤5.2.6.x

VeloCloud Edge 6.1.0 ≤6.1.4.x

Affected Packages

euvd velocloud_edge fix: 5.2.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Arista) PRIMARY 7.5 MEDIUM

CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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

CVSS VectorVendor: Arista

Attack Vector

Network

Attack Complexity

High

Attack Requirements

None

Privileges Required

High

User Interaction

None

Vulnerable system: Confidentiality

High

Vulnerable system: Integrity

High

Vulnerable system: Availability

High

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

Patch available

Sep 16, 2026 - 04:31 EUVD

Severity Changed

Sep 16, 2026 - 03:22 NVD

MEDIUM HIGH

CVSS changed

Sep 16, 2026 - 03:22 NVD

6.6 (MEDIUM) 7.5 (HIGH)

CVE Published

Sep 16, 2026 - 02:57 cve.org

HIGH 7.5

DescriptionCVE.org

The VeloCloud Edge software update workflow may accept update bundles without properly validating their signatures because the workflow does not restrict the digest algorithm used for artifact verification. An attacker with either sufficient privileges to upload packages to VeloCloud Orchestrator or credentials permitting direct access to an Edge may be able to install unauthorized software.

Threat Intelligence Overview

EPSS Score

0.2%

Top 84% exploitable

Data Quality

4 sources

Confidence: Medium

EUVD

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 0.2%

Patch available Yes

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.