CVEvulnerability

CVE-2020-26569

5.9 MEDIUM Published 2020-12-28 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-12-28
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:N/A:P

Description

In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. This affects versions: 4.21.12M and below releases in the 4.21.x train; 4.22.7M and below releases in the 4.22.x train; 4.23.5M and below releases in the 4.23.x train; 4.24.2F and below releases in the 4.24.x train.

Affected configurations

• arista eos (>= 4.21.0f <= 4.21.12m) • arista eos (>= 4.22.0f <= 4.22.7m) • arista eos (>= 4.23.0f <= 4.23.5m) • arista eos (>= 4.24.0f <= 4.24.2f)

References