#VU109361 Improper Authentication in Arista Metamako Operating System (MOS) - CVE-2021-28495
Published: May 17, 2025
Vulnerability identifier: #VU109361
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-28495
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Arista Metamako Operating System (MOS)
Arista Metamako Operating System (MOS)
Software vendor:
Arista Networks
Arista Networks
Description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error when processing authentication requests in JSON-RPC API. A remote attacker can bypass authentication process and gain unauthorized access to the application.
Remediation
Install updates from vendor's website.