What is CVE-2025-8873?

CVE-2025-8873 is a high-severity vulnerability in Arista Networks Eos, classified under CWE-1286. CVSS score: 7.5/10. Published 2026-06-04.

How severe is CVE-2025-8873?

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

Vulnerability in Arista Networks Eos

CVE-2025-8873

On affected platforms running Arista EOS with IPsec configured, a specially crafted packet can cause the dataplane to stop processing all IPsec traffic. The control plane may detect this condition, and attempt to reset the IPsec processing…

EPSS: 0.004 (30.9th 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:N/A:H.

Affected products

Arista Networks Eos — versions 4.33.0M, 4.32.0M, 4.31.0M

Weakness classification (CWE)

CWE-1286

References

psirt@arista.com (vendor-advisory)

Frequently asked questions

What is CVE-2025-8873?: CVE-2025-8873 is a high-severity vulnerability in Arista Networks Eos, classified under CWE-1286. CVSS score: 7.5/10. Published 2026-06-04.
How severe is CVE-2025-8873?: High severity. CVSS v3 base score is 7.5 out of 10.