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.
Published: 2026-09-16
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

Vendor Solution

The following releases contain the fix: - 5.2.7.0 and later in the 5.2.x train - 6.1.5.0 and later in the 6.1.x train - 6.4.2.0 and later in the 6.4.x train - 7.0.0 and later No hotfix is available for this issue.


Vendor Workaround

No mitigation is available for this issue. Customers should restrict overlay peer relationships to trusted devices and monitor for unexpected fragmentation behavior.

Tracking

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Advisories

No advisories yet.

History

Thu, 17 Sep 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Arista
Arista velocloud
Arista velocloud Gateway
Vendors & Products Arista
Arista velocloud
Arista velocloud Gateway

Wed, 16 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 16 Sep 2026 11:00:00 +0000

Type Values Removed Values Added
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.
Title Security Advisory 0180
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Arista Velocloud Velocloud Gateway
cve-icon MITRE

Status: PUBLISHED

Assigner: Arista

Published:

Updated: 2026-09-16T17:45:20.522Z

Reserved: 2026-09-05T01:54:43.258Z

Link: CVE-2026-86107

cve-icon Vulnrichment

Updated: 2026-09-16T17:45:10.362Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-16T11:16:43.920

Modified: 2026-09-16T19:10:09.867

Link: CVE-2026-86107

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-17T20:49:46Z

Weaknesses