CVE-2026-73442

On affected platforms running Arista EOS with VRRP enabled, the peer device VRRP authentication credentials are logged in cleartext on the switch, allowing an authenticated user with sufficient privileges to view agent trace logs (or a system receiving for

Published Sep 16, 2026 CVSS 4.0 · 2.1 Low EPSS < 1% KEV · Not listed
Description
On affected platforms running Arista EOS with VRRP enabled, the peer device VRRP authentication credentials are logged in cleartext on the switch, allowing an authenticated user with sufficient privileges to view agent trace logs (or a system receiving forwarded log output) to obtain the peer device VRRP authentication credentials without having access to the network segment on which VRRP is running.

Remediation

Vendor Solution

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2026-73442 has been fixed in the following releases: * 4.36.2F and later releases in the 4.36.x train * 4.35.6M and later releases in the 4.35.x train * 4.34.8M and later releases in the 4.34.x train * 4.33.10M and later releases in the 4.33.x train


Vendor Workaround

If the VRRP feature is not operationally required, disabling it removes the exposure. Otherwise, there is no mitigation or workaround available. Please note that disabling VRRP can lead to network outages if the primary router fails.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Arista
Arista eos
Vendors & Products Arista
Arista eos
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description On affected platforms running Arista EOS with VRRP enabled, the peer device VRRP authentication credentials are logged in cleartext on the switch, allowing an authenticated user with sufficient privileges to view agent trace logs (or a system receiving forwarded log output) to obtain the peer device VRRP authentication credentials without having access to the network segment on which VRRP is running.
Title On affected platforms running Arista EOS with VRRP enabled, the peer device VRRP authentication credentials are logged in cleartext on the switch, allowing an authenticated user with sufficient privileges to view agent trace logs (or a system receiving for
Weaknesses CWE-532
References
Metrics cvssV3_1

{'score': 3, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N'}

cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Arista
Published
Updated
Sep 17, 2026, 6:32 PM
Reserved
Aug 12, 2026, 4:39 PM
Status
Awaiting Analysis
Published
Sep 16, 2026, 7:17 PM
Modified
Sep 17, 2026, 7:16 PM