On affected Arista EOS platforms running Border Gateway Protocol with Link State ( BGP-LS) and configured with the Dynamic Path Selection (DPS) consumer role, an attacker who has established an authenticated BGP-LS session with the device can send a crafted message to cause the BGP agent to restart unexpectedly. An Arista Pathfinder deployment is not required.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

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 Unchanged

Confidentiality Impact None

Integrity Impact None

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
1.0.0 affected < 4.33.0F
4.32.0F affected < 4.33.0F
4.33.0F affected ≤ 4.33.10M
4.34.0F affected ≤ 4.34.8M
4.35.0F affected ≤ 4.35.6M
4.36.0F affected ≤ 4.36.2F

No data.

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.arista.com/en/support/advisories-notices/security-advisory/25033-security-advisory-0211 cve-icon cve-icon
History

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

Type Values Removed Values Added
Description On affected Arista EOS platforms running Border Gateway Protocol with Link State ( BGP-LS) and configured with the Dynamic Path Selection (DPS) consumer role, an attacker who has established an authenticated BGP-LS session with the device can send a crafted message to cause the BGP agent to restart unexpectedly. An Arista Pathfinder deployment is not required.
Title Security Advisory 0211
Weaknesses CWE-476
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Arista

Published:

Updated: 2026-11-10T20:09:52.613Z

Reserved: 2026-11-03T05:14:06.127Z

Link: CVE-2026-120978

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T20:18:52.940

Modified: 2026-11-10T20:18:52.940

Link: CVE-2026-120978

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses