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CVE-2020-26569 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57	CVE	ExploitVendor Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57	[email protected]	ExploitVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-noinfo	Insufficient Information to Classify Weakness	[email protected]

Affected Products

Product	Versions
arista eos	>= 4.21.0f, <= 4.21.12m >= 4.22.0f, <= 4.22.7m >= 4.23.0f, <= 4.23.5m >= 4.24.0f, <= 4.24.2f
CPE cpe:2.3:o:arista:eos:::::::: Remediation No remediation found in references.
arista 7010t-48	All versions
CPE cpe:2.3:h:arista:7010t-48:-:::::::* Remediation No remediation found in references.
arista 7050cx3-32s	All versions
CPE cpe:2.3:h:arista:7050cx3-32s:-:::::::* Remediation No remediation found in references.
arista 7050cx3m-32s	All versions
CPE cpe:2.3:h:arista:7050cx3m-32s:-:::::::* Remediation No remediation found in references.
arista 7050qx-32s	All versions
CPE cpe:2.3:h:arista:7050qx-32s:-:::::::* Remediation No remediation found in references.
arista 7050qx2-32s	All versions
CPE cpe:2.3:h:arista:7050qx2-32s:-:::::::* Remediation No remediation found in references.
arista 7050sx-128	All versions
CPE cpe:2.3:h:arista:7050sx-128:-:::::::* Remediation No remediation found in references.
arista 7050sx-64	All versions
CPE cpe:2.3:h:arista:7050sx-64:-:::::::* Remediation No remediation found in references.
arista 7050sx-72q	All versions
CPE cpe:2.3:h:arista:7050sx-72q:-:::::::* Remediation No remediation found in references.
arista 7050sx2-128	All versions
CPE cpe:2.3:h:arista:7050sx2-128:-:::::::* Remediation No remediation found in references.
arista 7050sx2-72q	All versions
CPE cpe:2.3:h:arista:7050sx2-72q:-:::::::* Remediation No remediation found in references.
arista 7050sx3-48c8	All versions
CPE cpe:2.3:h:arista:7050sx3-48c8:-:::::::* Remediation No remediation found in references.
arista 7050sx3-48yc	All versions
CPE cpe:2.3:h:arista:7050sx3-48yc:-:::::::* Remediation No remediation found in references.
arista 7050sx3-48yc12	All versions
CPE cpe:2.3:h:arista:7050sx3-48yc12:-:::::::* Remediation No remediation found in references.
arista 7050sx3-48yc8	All versions
CPE cpe:2.3:h:arista:7050sx3-48yc8:-:::::::* Remediation No remediation found in references.
arista 7050sx3-96yc8	All versions
CPE cpe:2.3:h:arista:7050sx3-96yc8:-:::::::* Remediation No remediation found in references.
arista 7050tx-48	All versions
CPE cpe:2.3:h:arista:7050tx-48:-:::::::* Remediation No remediation found in references.
arista 7050tx-64	All versions
CPE cpe:2.3:h:arista:7050tx-64:-:::::::* Remediation No remediation found in references.
arista 7050tx-72q	All versions
CPE cpe:2.3:h:arista:7050tx-72q:-:::::::* Remediation No remediation found in references.
arista 7050tx2-128	All versions
CPE cpe:2.3:h:arista:7050tx2-128:-:::::::* Remediation No remediation found in references.
arista 7050tx3-48c8	All versions
CPE cpe:2.3:h:arista:7050tx3-48c8:-:::::::* Remediation No remediation found in references.
arista 7060cx-32s	All versions
CPE cpe:2.3:h:arista:7060cx-32s:-:::::::* Remediation No remediation found in references.
arista 7060cx2-32s	All versions
CPE cpe:2.3:h:arista:7060cx2-32s:-:::::::* Remediation No remediation found in references.
arista 7060dx4-32	All versions
CPE cpe:2.3:h:arista:7060dx4-32:-:::::::* Remediation No remediation found in references.
arista 7060px4-32	All versions
CPE cpe:2.3:h:arista:7060px4-32:-:::::::* Remediation No remediation found in references.
arista 7060sx2-48yc6	All versions
CPE cpe:2.3:h:arista:7060sx2-48yc6:-:::::::* Remediation No remediation found in references.
arista 720xp-24y6	All versions
CPE cpe:2.3:h:arista:720xp-24y6:-:::::::* Remediation No remediation found in references.
arista 720xp-24zy4	All versions
CPE cpe:2.3:h:arista:720xp-24zy4:-:::::::* Remediation No remediation found in references.
arista 720xp-48y6	All versions
CPE cpe:2.3:h:arista:720xp-48y6:-:::::::* Remediation No remediation found in references.
arista 720xp-48zc2	All versions
CPE cpe:2.3:h:arista:720xp-48zc2:-:::::::* Remediation No remediation found in references.
arista 720xp-96zc2	All versions
CPE cpe:2.3:h:arista:720xp-96zc2:-:::::::* Remediation No remediation found in references.
arista 7250qx-64	All versions
CPE cpe:2.3:h:arista:7250qx-64:-:::::::* Remediation No remediation found in references.
arista 7260cx	All versions
CPE cpe:2.3:h:arista:7260cx:-:::::::* Remediation No remediation found in references.
arista 7260cx3	All versions
CPE cpe:2.3:h:arista:7260cx3:-:::::::* Remediation No remediation found in references.
arista 7260cx3-64	All versions
CPE cpe:2.3:h:arista:7260cx3-64:-:::::::* Remediation No remediation found in references.
arista 7260qx	All versions
CPE cpe:2.3:h:arista:7260qx:-:::::::* Remediation No remediation found in references.
arista 7300x-32q	All versions
CPE cpe:2.3:h:arista:7300x-32q:-:::::::* Remediation No remediation found in references.
arista 7300x-64s	All versions
CPE cpe:2.3:h:arista:7300x-64s:-:::::::* Remediation No remediation found in references.
arista 7300x-64t	All versions
CPE cpe:2.3:h:arista:7300x-64t:-:::::::* Remediation No remediation found in references.
arista 7300x3-32c	All versions
CPE cpe:2.3:h:arista:7300x3-32c:-:::::::* Remediation No remediation found in references.
arista 7300x3-48yc4	All versions
CPE cpe:2.3:h:arista:7300x3-48yc4:-:::::::* Remediation No remediation found in references.
arista 7304x3	All versions
CPE cpe:2.3:h:arista:7304x3:-:::::::* Remediation No remediation found in references.
arista 7308x3	All versions
CPE cpe:2.3:h:arista:7308x3:-:::::::* Remediation No remediation found in references.
arista 7320x-32c	All versions
CPE cpe:2.3:h:arista:7320x-32c:-:::::::* Remediation No remediation found in references.
arista 7324x	All versions
CPE cpe:2.3:h:arista:7324x:-:::::::* Remediation No remediation found in references.
arista 7328x	All versions
CPE cpe:2.3:h:arista:7328x:-:::::::* Remediation No remediation found in references.
arista 7368x4	All versions
CPE cpe:2.3:h:arista:7368x4:-:::::::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jan 27, 2021	Reanalysis	[email protected]
Jan 5, 2021	Initial Analysis	[email protected]

CVE-2020-26569 Details

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