CVE-2024-27892: CWE-306 Missing Authentication for Critical Function in Arista Networks EOS
CVE-2024-27892 is a high-severity vulnerability in Arista Networks EOS affecting versions 4.24.0 through 4.31.0. It involves missing authentication for a critical function where a gNMI Set request can be executed despite it being expected to be rejected. This flaw can lead to unexpected configuration changes on the affected switches.
AI Analysis
Technical Summary
This vulnerability (CWE-306) in Arista EOS occurs when OpenConfig is configured, allowing an unauthenticated or improperly authenticated gNMI Set request to be processed. This bypass of authentication controls enables an attacker with network access and limited privileges to apply unauthorized configuration changes to the switch. The CVSS 4.0 base score is 7.2, reflecting network attack vector, low attack complexity, no user interaction, and high impact on integrity and availability. No official patch or remediation level has been published by Arista as of the data provided.
Potential Impact
Exploitation of this vulnerability can result in unauthorized configuration changes to network switches running affected EOS versions with OpenConfig enabled. This may disrupt network operations or compromise network integrity and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict network access to management interfaces and limit exposure of gNMI services. Monitor for unusual configuration changes and apply strict access controls to reduce risk.
CVE-2024-27892: CWE-306 Missing Authentication for Critical Function in Arista Networks EOS
Description
CVE-2024-27892 is a high-severity vulnerability in Arista Networks EOS affecting versions 4.24.0 through 4.31.0. It involves missing authentication for a critical function where a gNMI Set request can be executed despite it being expected to be rejected. This flaw can lead to unexpected configuration changes on the affected switches.
CVSS v4.0
Score 7.2high
Affected software
pkg:github/aristanetworks/eosRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-306) in Arista EOS occurs when OpenConfig is configured, allowing an unauthenticated or improperly authenticated gNMI Set request to be processed. This bypass of authentication controls enables an attacker with network access and limited privileges to apply unauthorized configuration changes to the switch. The CVSS 4.0 base score is 7.2, reflecting network attack vector, low attack complexity, no user interaction, and high impact on integrity and availability. No official patch or remediation level has been published by Arista as of the data provided.
Potential Impact
Exploitation of this vulnerability can result in unauthorized configuration changes to network switches running affected EOS versions with OpenConfig enabled. This may disrupt network operations or compromise network integrity and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict network access to management interfaces and limit exposure of gNMI services. Monitor for unusual configuration changes and apply strict access controls to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arista
- Date Reserved
- 2024-02-26T18:06:32.161Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2200c5e29bf47b50d9ecc9
Added to database: 06/04/2026, 22:48:37 UTC
Last enriched: 06/12/2026, 10:28:51 UTC
Last updated: 07/31/2026, 19:22:51 UTC
Views: 69
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