Vulnerability in Arista Networks Eos
CVE-2025-6188
On affected platforms running Arista EOS, maliciously formed UDP packets with source port 3503 may be accepted by EOS. UDP Port 3503 is associated with LspPing Echo Reply. This can result in unexpected behaviors, especially for UDP based services that do not perform some form of authentication.
EPSS: 0.004 (34.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Arista Networks Eos — versions 4.33.0, 4.33.1.0, 4.32.4.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-6188?
- CVE-2025-6188 is a high-severity vulnerability in Arista Networks Eos, classified under Authentication Bypass by Spoofing. CVSS score: 7.5/10. Published 2025-08-25.
- How severe is CVE-2025-6188?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-6188 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.