What’s Vulnerable › Vulnerabilities
CVE-2025-7048: On affected platforms running Arista EOS with MACsec configuration, a specially crafted packet can cause the MACsec process to terminate unexpectedly. Continuous receipt of these packets with certain MACsec configurations can cause longer term disruption o
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-01-06 · updated 2026-10-07
- Weakness: CWE-805
Description
On affected platforms running Arista EOS with MACsec configuration, a specially crafted packet can cause the MACsec process to terminate unexpectedly. Continuous receipt of these packets with certain MACsec configurations can cause longer term disruption of dataplane traffic.
Affected products
- Arista Networks EOS: from 4.34.3.0 through 4.34.3.1M; from 4.33.0 through 4.33.5M; from 4.32.0 through 4.32.7M; from 4.31.0 through 4.31.9M; before 4.30.0 — fixed in 4.30.0
How to fix
Upgrade to a fixed version: Arista Networks EOS 4.30.0. Check the vendor advisory for mitigations.
References
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