CVE-2026-86107: CWE-787 Out-of-bounds Write in Arista Networks VeloCloud
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.
CVE-2026-86107: CWE-787 Out-of-bounds Write in Arista Networks VeloCloud
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 v3.1
Score 5.9medium
Affected software
Arista Networks
VeloCloud
Arista Networks
VeloCloud Gateway
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arista
- Date Reserved
- 2026-09-05T01:54:43.258Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa774355bf5e2cf571d129
Added to database: 09/16/2026, 11:02:27 UTC
Last updated: 09/16/2026, 11:02:27 UTC
Views: 1
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