Cleartext Packet Transmission in Arista EOS with Secure Vxlan Configuration
CVE-2024-12378

9.1CRITICAL

Key Information:

Vendor

Arista Networks

Status
Cloudvision Portal
Vendor
CVE Published:
8 May 2025

What is CVE-2024-12378?

A vulnerability exists in Arista EOS when operating with secure Vxlan configured. Restarting the Tunnelsec agent can lead to unintended transmission of packets in cleartext over these secure tunnels, potentially exposing sensitive network data to interception.

Affected Version(s)

CloudVision Portal 4.32.0 <= 4.32.2F

CloudVision Portal 4.31.0 <= 4.31.6M

CloudVision Portal 4.30.0 <= 4.30.8M

References

https://www.arista.com/en/support/advisories-notices/secu...

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2024-12378 : Cleartext Packet Transmission in Arista EOS with Secure Vxlan Configuration