CVE-2026-19641

On affected platforms running Arista EOS with password authentication configured, a specially crafted password can create orphan authentication sessions. Repeated exploitation of this issue can exhaust available authentication resources, resulting in legitimate users being unable to log in to the device. This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://www.arista.com/en/support/advisories-notices/security-advisory/24708-security-advisory-0152

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-15 19:17

Updated : 2026-09-15 20:17

NVD link : CVE-2026-19641

Mitre link : CVE-2026-19641

CVE.ORG link : CVE-2026-19641

JSON object : View

Products Affected

No product.

CWE

CWE-116

Improper Encoding or Escaping of Output

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