Input validation error in Arista Extensible Operating System (EOS) - CVE-2020-15897
Published: May 17, 2025
Vulnerability identifier: #VU109293
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-15897
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Arista Networks
Affected software:
Arista Extensible Operating System (EOS)
Arista Extensible Operating System (EOS)
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of network packets when using IS-IS protocol. A remote attacker can send specially crafted link-state PDU packets to the device and perform a denial of service attack.
How to mitigate CVE-2020-15897
Install updates from vendor's website.