CVE-2025-7048 Denial of service in EOS
A specially crafted packet can crash the MACsec process on Arista EOS devices, causing disruption to dataplane traffic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-7048?
CVE-2025-7048 is a medium-severity denial of service vulnerability in Arista Networks EOS, published on 6 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-805
Which versions are affected by CVE-2025-7048?
How do I fix CVE-2025-7048?
No fix has been published for CVE-2025-7048 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-7048 being exploited?
There is no known exploitation of CVE-2025-7048 in the wild and no public exploit code.
Sources
Also known as GHSA-8wvr-g2vr-63w6.