CVE-2026-121292 - Vulnerability Details

Description

A malformed Error Report can cause EOS to read beyond packet boundaries, potentially terminating the RPKI agent or exposing unintended memory contents through logging.

Published: 2026-11-10

Score: 8.3 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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
`4.37.0F`	affected	—
`4.36.0F`	affected	≤ 4.36.2F
`4.35.0F`	affected	≤ 4.35.6M
`4.34.0F`	affected	≤ 4.34.8M
`4.33.0F`	affected	≤ 4.33.10M
`4.24.0F`	affected	< 4.33.0F

No data.

Vendor Product Confidence Versions

Arista

Eos

100%

Version	Status	Scheme	Platform
`4.37.0F`	affected	generic	['710_series', '720d_series', '720xp/722xpm_series', '750x_series', '7010tx_series', '7020r/r4_series', '7130_series_running_eos', '7170_series', '7050x3/x4_series', '7060x/x2/x4/x5/x6/xe7_series', '7260x/x3_series', '7280r/r2/r3/r4_series', '7300x/x3_series', '7320x_series', '7358x4_series', '7368x4_series', '7388x5_series', '7500r/r2/r3_series', '7800r3/r4_series', '7700r4_series', 'awe_5000_series', 'awe_7200r_series', 'ztx-7200_series', 'cloudeos', 'ceos-lab', 'veos-lab', 'cloudvision_exchange,_virtual_or_physical_appliance']
`[4.36.0F,4.36.2F]`	affected	generic	['710_series', '720d_series', '720xp/722xpm_series', '750x_series', '7010tx_series', '7020r/r4_series', '7130_series_running_eos', '7170_series', '7050x3/x4_series', '7060x/x2/x4/x5/x6/xe7_series', '7260x/x3_series', '7280r/r2/r3/r4_series', '7300x/x3_series', '7320x_series', '7358x4_series', '7368x4_series', '7388x5_series', '7500r/r2/r3_series', '7800r3/r4_series', '7700r4_series', 'awe_5000_series', 'awe_7200r_series', 'ztx-7200_series', 'cloudeos', 'ceos-lab', 'veos-lab', 'cloudvision_exchange,_virtual_or_physical_appliance']
`[4.35.0F,4.35.6M]`	affected	generic	['710_series', '720d_series', '720xp/722xpm_series', '750x_series', '7010tx_series', '7020r/r4_series', '7130_series_running_eos', '7170_series', '7050x3/x4_series', '7060x/x2/x4/x5/x6/xe7_series', '7260x/x3_series', '7280r/r2/r3/r4_series', '7300x/x3_series', '7320x_series', '7358x4_series', '7368x4_series', '7388x5_series', '7500r/r2/r3_series', '7800r3/r4_series', '7700r4_series', 'awe_5000_series', 'awe_7200r_series', 'ztx-7200_series', 'cloudeos', 'ceos-lab', 'veos-lab', 'cloudvision_exchange,_virtual_or_physical_appliance']
`[4.34.0F,4.34.8M]`	affected	generic	['710_series', '720d_series', '720xp/722xpm_series', '750x_series', '7010tx_series', '7020r/r4_series', '7130_series_running_eos', '7170_series', '7050x3/x4_series', '7060x/x2/x4/x5/x6/xe7_series', '7260x/x3_series', '7280r/r2/r3/r4_series', '7300x/x3_series', '7320x_series', '7358x4_series', '7368x4_series', '7388x5_series', '7500r/r2/r3_series', '7800r3/r4_series', '7700r4_series', 'awe_5000_series', 'awe_7200r_series', 'ztx-7200_series', 'cloudeos', 'ceos-lab', 'veos-lab', 'cloudvision_exchange,_virtual_or_physical_appliance']
`[4.33.0F,4.33.10M]`	affected	generic	['710_series', '720d_series', '720xp/722xpm_series', '750x_series', '7010tx_series', '7020r/r4_series', '7130_series_running_eos', '7170_series', '7050x3/x4_series', '7060x/x2/x4/x5/x6/xe7_series', '7260x/x3_series', '7280r/r2/r3/r4_series', '7300x/x3_series', '7320x_series', '7358x4_series', '7368x4_series', '7388x5_series', '7500r/r2/r3_series', '7800r3/r4_series', '7700r4_series', 'awe_5000_series', 'awe_7200r_series', 'ztx-7200_series', 'cloudeos', 'ceos-lab', 'veos-lab', 'cloudvision_exchange,_virtual_or_physical_appliance']
`[4.24.0F,4.33.0F)`	affected	generic	['710_series', '720d_series', '720xp/722xpm_series', '750x_series', '7010tx_series', '7020r/r4_series', '7130_series_running_eos', '7170_series', '7050x3/x4_series', '7060x/x2/x4/x5/x6/xe7_series', '7260x/x3_series', '7280r/r2/r3/r4_series', '7300x/x3_series', '7320x_series', '7358x4_series', '7368x4_series', '7388x5_series', '7500r/r2/r3_series', '7800r3/r4_series', '7700r4_series', 'awe_5000_series', 'awe_7200r_series', 'ztx-7200_series', 'cloudeos', 'ceos-lab', 'veos-lab', 'cloudvision_exchange,_virtual_or_physical_appliance']

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00426.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://www.arista.com/en/support/advisories-notices/security-advisory/25044-security-advisory-0222

History

Thu, 12 Nov 2026 15:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Arista Arista eos
Vendors & Products		Arista Arista eos

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

Type	Values Removed	Values Added
Description		A malformed Error Report can cause EOS to read beyond packet boundaries, potentially terminating the RPKI agent or exposing unintended memory contents through logging.
Title		Security Advisory 0222
Weaknesses		CWE-125
References		https://www.arista.com/en/support/advisories-notices/security-advisory/25044-security-advisory-0222
Metrics		cvssV3_1 `{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'}` cvssV4_0 `{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:L/SA:N'}`

Subscriptions

Arista Eos

MITRE

Status: PUBLISHED

Assigner: Arista

Published: 2026-11-10T20:09:58.193Z

Updated: 2026-11-10T20:09:58.193Z

Reserved: 2026-11-03T11:21:01.892Z

Link: CVE-2026-121292

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-11-10T20:18:54.743

Modified: 2026-11-10T20:18:54.743

Link: CVE-2026-121292

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-11-12T15:15:04Z

Weaknesses

CWE-125

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact High

User Interaction None

Subscriptions

JSON object

JSON object

JSON object

JSON object

JSON object