VULNERABILITY INTELLIGENCE
CVE-2026-19641
CVSS score5.3 MEDIUM
EPSS probability0.47%
CISA KEVNot currently listed
Published2026-09-15
Last modified2026-09-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
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.
Weakness classification
- psirt@arista.com: CWE-116