Input validation error in Arista Extensible Operating System (EOS) - CVE-2020-26569
Published: May 17, 2025
Vulnerability identifier: #VU109291
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:L]
CVE-ID: CVE-2020-26569
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an error when performing MAC to IP bindings. A remote attacker can send specially crafted packets to the device and cause packets to be forwarded across VLAN boundaries.
Affected software
Arista Extensible Operating System (EOS)
How to mitigate CVE-2020-26569
Install updates from vendor's website.
Arista Extensible Operating System (EOS) - addressed in versions 4.21.13M, 4.22.8M, 4.23.6M, 4.24.3M, 4.25.0F