Medium severity · published Jun 5, 2026
CVE-2025-5090
Arista CloudVision Exchange Cluster Instability via Unexpected Switch Messages
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
CVX is not resilient to unexpected messages from a connected switch. This leads to agent crashes on CVX causing instability in the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to have a high privilege access to the connected switch to be able to send custom TCP packets to the CVX.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EC
EOS / CloudVision eXchange (CVX) · Arista Networks
4.34.0F through 4.34.1F; 4.33.0M through 4.33.4M; 4.32.0M through 4.32.6M; 4.31.0 before 4.32.0; 4.30.0 before 4.31.0 · source: vendor
Affected product
EC
EOS / CloudVision eXchange (CVX)
Arista Networks
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-5090
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-5090
www.arista.com
https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126
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