CVE-2024-12378 Security feature bypass in CloudVision Portal
Restarting the Tunnelsec agent on Arista EOS with secure Vxlan configured causes traffic to be transmitted in clear text, exposing data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-12378?
CVE-2024-12378 is a critical vulnerability in Arista Networks CloudVision Portal, published on 8 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
On affected platforms running Arista EOS with secure Vxlan configured, restarting the Tunnelsec agent will result in packets being sent over the secure Vxlan tunnels in the clear.
Weakness: CWE-319
Which versions are affected by CVE-2024-12378?
How do I fix CVE-2024-12378?
No fix has been published for CVE-2024-12378 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-12378 being exploited?
There is no known exploitation of CVE-2024-12378 in the wild and no public exploit code.
Sources
Also known as GHSA-f369-84xf-vvxq.