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CVE-2026-120976 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.arista.com/en/support/advisories-notices/security-advisory/25038-security-advisory-0216	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-532	Insertion of Sensitive Information into Log File	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes