CVE-2024-6858: CWE-1287 Improper validation of specified type of input in Arista Networks EOS
CVE-2024-6858 is a vulnerability in Arista Networks EOS affecting versions 4. 28. 10 through 4. 31. 0. When operating in 802. 1X mode, multi-authentication unauthenticated hosts may gain access to a switch port if an EAPOL-capable device exists in the fallback VLAN. This improper validation of input type (CWE-1287) could allow unauthorized network access. There is no CVSS score or vendor-provided remediation information available at this time. No known exploits are reported in the wild.
AI Analysis
Technical Summary
This vulnerability in Arista EOS involves improper validation of input types in 802.1X mode. Specifically, multi-authentication unauthenticated hosts might be granted access to a switch port if an EAPOL-capable device is present in the fallback VLAN. This could lead to unauthorized network access through the switch port. The affected versions include 4.28.10, 4.29.0, 4.30.0, and 4.31.0. There is no CVSS score or official remediation level provided, and no known exploits have been reported. The vulnerability is categorized under CWE-1287.
Potential Impact
The vulnerability could allow multi-authentication unauthenticated hosts to access switch ports improperly, potentially leading to unauthorized network access. This may undermine network access controls enforced by 802.1X authentication. No further impact details or exploitation reports are available.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is provided, monitor Arista Networks advisories for updates. Avoid relying solely on fallback VLAN configurations for security until a fix is available.
CVE-2024-6858: CWE-1287 Improper validation of specified type of input in Arista Networks EOS
Description
CVE-2024-6858 is a vulnerability in Arista Networks EOS affecting versions 4. 28. 10 through 4. 31. 0. When operating in 802. 1X mode, multi-authentication unauthenticated hosts may gain access to a switch port if an EAPOL-capable device exists in the fallback VLAN. This improper validation of input type (CWE-1287) could allow unauthorized network access. There is no CVSS score or vendor-provided remediation information available at this time. No known exploits are reported in the wild.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Arista EOS involves improper validation of input types in 802.1X mode. Specifically, multi-authentication unauthenticated hosts might be granted access to a switch port if an EAPOL-capable device is present in the fallback VLAN. This could lead to unauthorized network access through the switch port. The affected versions include 4.28.10, 4.29.0, 4.30.0, and 4.31.0. There is no CVSS score or official remediation level provided, and no known exploits have been reported. The vulnerability is categorized under CWE-1287.
Potential Impact
The vulnerability could allow multi-authentication unauthenticated hosts to access switch ports improperly, potentially leading to unauthorized network access. This may undermine network access controls enforced by 802.1X authentication. No further impact details or exploitation reports are available.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is provided, monitor Arista Networks advisories for updates. Avoid relying solely on fallback VLAN configurations for security until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arista
- Date Reserved
- 2024-07-17T20:13:57.799Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a21f664e29bf47b50d67d43
Added to database: 6/4/2026, 10:04:20 PM
Last enriched: 6/4/2026, 10:18:36 PM
Last updated: 6/5/2026, 12:53:27 AM
Views: 4
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