Security Advisory 0180

Answer in brief

CVE-2026-86107 records a Unknown severity vulnerability in Security Advisory 0180. The current sources do not mark it as known exploited. The current feed maps Arista Networks/VeloCloud (generic), Arista Networks/VeloCloud Gateway (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Arista Networks/VeloCloud (generic), Arista Networks/VeloCloud Gateway (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Arista Networks/VeloCloudgeneric	>=1.0.0.0 <5.2.0.0 \|\| >=5.2.0.0 <5.2.7.0 \|\| >=6.1.0.0 <6.1.5.0 \|\| >=6.4.0.0 <6.4.2.0	5.2.0.0, 5.2.7.0, 6.1.5.0, 6.4.2.0
Arista Networks/VeloCloud Gatewaygeneric	>=1.0.0.0 <5.2.0.0 \|\| >=5.2.0.0 <5.2.7.0 \|\| >=6.1.0.0 <6.1.5.0 \|\| >=6.4.0.0 <6.4.2.0	5.2.0.0, 5.2.7.0, 6.1.5.0, 6.4.2.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for Arista Networks/VeloCloud, Arista Networks/VeloCloud Gateway.
Review the reported fix. Update Arista Networks/VeloCloud to 5.2.0.0; Arista Networks/VeloCloud Gateway to 5.2.0.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Source referencearista.com

Upstream source description

The VeloCloud Edge and Gateway exhibit an out-of-bounds write vulnerability when processing tunneled IP fragments between authenticated overlay neighbors. This vulnerability impacts the VeloCloud VCMP tunnel protocol only. A successful exploit can cause the affected process to terminate and restart, leading to a temporary disruption of traffic. Hosts on the internet that are unauthenticated and unable to form an overlay peer relationship can not trigger the vulnerable logic.

Quoted source text, attributed separately from HOL analysis.