CVE-2026-19655
6.5
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) relay/snooping configured with the information option (Option 82), or with the DHCP server configured with match criteria based on the information option, an unauthenticated attacker connected to a client-facing VLAN(s) where the relay is configured can send a specially crafted packet that causes the DHCP Relay service to restart.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Arista Networks | EOS | 4.35.0 <= 4.35.5M | affected |
| Arista Networks | EOS | 4.34.0 <= 4.34.7.1M | affected |
| Arista Networks | EOS | 4.33.0 <= 4.33.9M | affected |
Weaknesses
- CWE-20: CWE-20 Improper Input Validation
Workarounds
There is no workaround known for this issue.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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