On affected EOS versions with the eAPI service enabled, a specially crafted HTTP request can allow an unauthenticated, remote attacker to read arbitrary files, including sensitive credentials from the switch filesystem.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

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
4.36.0F affected ≤ 4.36.3M
4.35.0F affected ≤ 4.35.7M
4.34.0F affected ≤ 4.34.9M
4.33.0F affected ≤ 4.33.11M
4.32.0F affected < 4.33.0F
1.0.0 affected < 4.32.0F

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

switch(config)#management http-server switch(config-mgmt-http-server)#no default-services switch#show running-config | sect http-server management http-server protocol http no default-services Or: switch(config)#management api http-commands switch(config-mgmt-api-http-cmds)#no default-services switch#show running-config | sect http-commands management api http-commands protocol http no default-services no shutdown

References
Link Providers
https://www.arista.com/en/support/advisories-notices/security-advisory/25040-security-advisory-0218 cve-icon cve-icon
History

Tue, 10 Nov 2026 20:15:00 +0000

Type Values Removed Values Added
Description On affected EOS versions with the eAPI service enabled, a specially crafted HTTP request can allow an unauthenticated, remote attacker to read arbitrary files, including sensitive credentials from the switch filesystem.
Title Security Advisory 0218
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Arista

Published:

Updated: 2026-11-10T22:02:11.894Z

Reserved: 2026-11-03T11:27:14.150Z

Link: CVE-2026-121371

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T20:18:56.640

Modified: 2026-11-10T22:18:25.920

Link: CVE-2026-121371

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses