CVE-2020-26569

Public Exploit

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.

5.9

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.39%

Vendor Advisory arista.com

Affected: n/a n/a

References

Link	Tags
https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57	exploit vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-26569?: CVE-2020-26569 has been scored as a medium severity vulnerability.
How to fix CVE-2020-26569?: To fix CVE-2020-26569, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-26569 being actively exploited in the wild?: It is possible that CVE-2020-26569 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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