CVE-2026-86107
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Vulnerability report for CVE-2026-86107, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-16
Last updated on: 2026-09-16
Assigner: Arista Networks, Inc.
Description
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.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Arista | Networks | VeloCloud 1.0.0.0 |
| Arista | Networks | VeloCloud 5.2.0.0 |
| Arista | Networks | VeloCloud 6.1.0.0 |
| Arista | Networks | VeloCloud 6.4.0.0 |
| Arista | Networks | VeloCloud Gateway 1.0.0.0 |
| Arista | Networks | VeloCloud Gateway 5.2.0.0 |
| Arista | Networks | VeloCloud Gateway 6.1.0.0 |
| Arista | Networks | VeloCloud Gateway 6.4.0.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
