CVE-2020-26569
mediumpriority · track · 24OT risk · elevatedEPSS 0.009 · 58 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
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affected products (5)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
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references (4)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2020-26569cnnvd
- https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57cnnvd
- https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57enisa_euvd
- https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57ExploitVendor Advisorynvd
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