Input validation error in Arista Extensible Operating System (EOS) - CVE-2020-26568
Published: May 17, 2025
Vulnerability identifier: #VU109292
CSH Severity: Medium
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:L]
CVE-ID: CVE-2020-26568
CWE-ID: CWE-20
Exploitation vector: Remote access
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 insufficient validation of UDP packets. A remote attacker can force malformed UDP packets to be forwarded across VRF boundaries when non-default VRFs are configured.
Affected software
Arista Extensible Operating System (EOS)
How to mitigate CVE-2020-26568
Install updates from vendor's website.
Arista Extensible Operating System (EOS) - addressed in versions 4.21.13M, 4.22.7.1M, 4.23.5M, 4.24.2.2F, 4.24.3M, 4.25.0F