CVE-2026-121294
Security Advisory 0223
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
On affected platforms running Arista EOS with a S-BFD reflector proxy configured, an unauthenticated attacker could send a crafted S-BFD Protocol Data Unit (PDU) that might cause the device to temporarily cease reflecting S-BFD packets, potentially resulting in S-BFD session timeouts.
| CWE | CWE-1284 |
| Vendor | arista networks |
| Product | eos |
| Published | Nov 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Arista Networks / EOS
4.36.0F ≤ 4.36.2F 4.35.0F ≤ 4.35.6M 4.34.0F ≤ 4.34.8M 4.33.0F ≤ 4.33.10M 4.32.0F < 4.33.0F 4.29.0F < 4.32.0F 4.28.2F < 4.29.0F