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Vulnerabilities

CVE-2026-120976 | BDVDB-2026-404473 Detail

Arista NetworksEOS

Description#

On affected platforms running Arista EOS with IEEE 802.1X authentication and MACsec using dynamically derived keys, sensitive authentication information may be recorded in diagnostic data during a Smart Switch Upgrade (SSU). An attacker with administrative access on the device who obtains the affected diagnostic data could recover sensitive authentication information. This could potentially compromise the confidentiality and integrity of traffic protected by MACsec on the affected link. The vulnerability is only exposed during and after an SSU reload where an active 802.1X session used for MACsec is present.

Impact#

CAPEC-37 Retrieve Embedded Sensitive Data

Weaknesses#

  • CWE-532 Insertion of Sensitive Information into Log File

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.