CVE-2026-86107
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Arista Networks | VeloCloud | 1.0.0.0 < 5.2.0.0 | affected |
| Arista Networks | VeloCloud | 5.2.0.0 < 5.2.7.0 | affected |
| Arista Networks | VeloCloud | 6.1.0.0 < 6.1.5.0 | affected |
| Arista Networks | VeloCloud | 6.4.0.0 < 6.4.2.0 | affected |
| Arista Networks | VeloCloud Gateway | 1.0.0.0 < 5.2.0.0 | affected |
| Arista Networks | VeloCloud Gateway | 5.2.0.0 < 5.2.7.0 | affected |
| Arista Networks | VeloCloud Gateway | 6.1.0.0 < 6.1.5.0 | affected |
| Arista Networks | VeloCloud Gateway | 6.4.0.0 < 6.4.2.0 | affected |
Weaknesses
- CWE-787: CWE-787 Out-of-bounds Write
Workarounds
No mitigation is available for this issue. Customers should restrict overlay peer relationships to trusted devices and monitor for unexpected fragmentation behavior.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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