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Vulnerabilities

Vulnerability · CVE-2024-12378

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.

Published May 8, 2025 · catalog updated May 8, 2025 · Arista Networks CloudVision Portal

Check this week

CVE-2024-12378 is not in CISA KEV. FIRST estimates a 50.00% chance of exploitation in the next 30 days. Check whether you run Arista Networks CloudVision Portal.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
50.00%
Remediation
Advisory link
Affected products
vendor Arista Networks CloudVision Portal 4.29.0 ≤4.29.9M

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Arista Networks CloudVision Portal 4.29.0 ≤4.29.9M4.29.0 ≤4.29.9M

How to fix CVE-2024-12378

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2024-12378 is not in CISA KEV. FIRST estimates a 50.00% chance of exploitation in the next 30 days. Check whether you run Arista Networks CloudVision Portal.

Which versions are affected?

Compare what you have installed with Arista Networks CloudVision Portal 4.29.0 ≤4.29.9M 4.29.0 ≤4.29.9M. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 50.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 8, 2025 · EUVD

    Detected

    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.

  2. May 8, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2024-12378

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2024-54462

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.