Input validation error in Arista CloudEOS VM - CVE-2020-11622
Published: May 17, 2025
Vulnerability identifier: #VU109283
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-11622
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 TCP packets when TCP MSS options are configured. A remote attacker can send specially crafted traffic to the system and perform a denial of service (DoS) attack.
Affected software
Arista CloudEOS VM
How to mitigate CVE-2020-11622
Install updates from vendor's website.
Arista CloudEOS VM - addressed in versions 4.21.11M, 4.22.5M, 4.23.3M, 4.24.0FX, 4.24.1F