What is CVE-2018-5254?

CVE-2018-5254 is a high-severity vulnerability in Arista Eos, classified under CWE-417. CVSS score: 7.5/10. Published 2018-04-12.

How severe is CVE-2018-5254?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Arista Eos

CVE-2018-5254

Arista EOS before 4.20.2F allows remote BGP peers to cause a denial of service (Rib agent restart) via a malformed path attribute in an UPDATE message.

Published 2018-04-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (68.6th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.012 · change: -0.000

Affected products

Arista Eos

Weakness classification (CWE)

CWE-417

References

www.arista.com/en/support/advisories-notices/security-advisories/4403-security-… (Vendor Advisory)

Frequently asked questions

What is CVE-2018-5254?: CVE-2018-5254 is a high-severity vulnerability in Arista Eos, classified under CWE-417. CVSS score: 7.5/10. Published 2018-04-12.
How severe is CVE-2018-5254?: High severity. CVSS v3 base score is 7.5 out of 10.