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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 legit PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Arista Networks / EOSaffected 4.36.0 through 4.36.0F; affected 4.35.0 through 4.35.5M; affected 4.34.0 through 4.34.7.1M; affected 0.0.0 through 4.33.8M

CWE

CWE-116

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.