CVE-2026-73442: CWE-532 Insertion of Sensitive Information into Log File in Arista Networks EOS
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.
AI Analysis
Technical Summary
On Arista EOS platforms with VRRP enabled, peer device VRRP authentication credentials are inserted into log files in cleartext. An authenticated user with sufficient privileges can access agent trace logs or forwarded log outputs to retrieve these credentials, bypassing the need for network segment access where VRRP operates. The vulnerability is identified as CWE-532 (Insertion of Sensitive Information into Log File) and affects versions >=4.33.0 <4.33.10M, >=4.34.0 <4.34.8M, >=4.35.0 <4.35.6M, and >=4.36.0 <4.36.2F.
Potential Impact
The vulnerability exposes VRRP authentication credentials in cleartext logs, potentially allowing an authenticated user with sufficient privileges to obtain sensitive authentication information. This could lead to credential compromise without direct network segment access. The CVSS score of 3 indicates low severity, reflecting limited impact due to required privileges and attack complexity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict access to agent trace logs and any systems receiving forwarded log output to trusted administrators only. Monitor vendor communications for updates on official fixes.
CVE-2026-73442: CWE-532 Insertion of Sensitive Information into Log File in Arista Networks EOS
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.
CVSS v3.1
Score 3.0low
Affected software
Arista Networks
EOS
pkg:github/aristanetworks/eosRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
On Arista EOS platforms with VRRP enabled, peer device VRRP authentication credentials are inserted into log files in cleartext. An authenticated user with sufficient privileges can access agent trace logs or forwarded log outputs to retrieve these credentials, bypassing the need for network segment access where VRRP operates. The vulnerability is identified as CWE-532 (Insertion of Sensitive Information into Log File) and affects versions >=4.33.0 <4.33.10M, >=4.34.0 <4.34.8M, >=4.35.0 <4.35.6M, and >=4.36.0 <4.36.2F.
Potential Impact
The vulnerability exposes VRRP authentication credentials in cleartext logs, potentially allowing an authenticated user with sufficient privileges to obtain sensitive authentication information. This could lead to credential compromise without direct network segment access. The CVSS score of 3 indicates low severity, reflecting limited impact due to required privileges and attack complexity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict access to agent trace logs and any systems receiving forwarded log output to trusted administrators only. Monitor vendor communications for updates on official fixes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arista
- Date Reserved
- 2026-08-12T16:39:35.977Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaae7b555bf5e2cf5087545
Added to database: 09/16/2026, 19:02:13 UTC
Last enriched: 09/16/2026, 19:17:44 UTC
Last updated: 09/17/2026, 02:03:09 UTC
Views: 8
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