Affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should have been rejected. This can result in unexpected configuration being applied to the switch.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Arista Networks EOS unaffected
Version Status Constraints
4.29.0 affected ≤ 4.29.7M
4.28.0 affected ≤ 4.28.10M
4.27.0 affected ≤ 4.27.8M
4.26.0 affected ≤ 4.26.9M
4.25.0 affected ≤ 4.25.10M
4.24.0 affected ≤ 4.24.11M

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see EOS User Manual: Upgrades and Downgrades https://www.arista.com/en/um-eos/eos-upgrades-and-downgrades CVE-2024-27890 has been fixed in the following releases: * 4.30.0M and onwards * 4.29.8M and later releases in the 4.29.x train * 4.28.11M and later releases in the 4.28.x train

Workaround

The workaround to mitigate this vulnerability is to disable the OpenConfig agent entirely: switch(config-gnmi-transport-default)#no management api gnmi Alternatively for both, the OpenConfig agent can be disabled. switch(config-gnmi-transport-default)#no management api gnmi

References
Link Providers
https://www.arista.com/en/support/advisories-notices/security-advisory/19862-security-advisory-0099 cve-icon cve-icon
History

Thu, 04 Jun 2026 22:45:00 +0000

Type Values Removed Values Added
Description Affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should have been rejected. This can result in unexpected configuration being applied to the switch.
Title On affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should have been rejected (No SSL Profiles Enabled).
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Arista

Published:

Updated: 2026-06-04T22:27:36.610Z

Reserved: 2024-02-26T18:06:32.160Z

Link: CVE-2024-27890

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-04T23:16:47.487

Modified: 2026-06-04T23:16:47.487

Link: CVE-2024-27890

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-05T00:00:08Z

Weaknesses