What’s Vulnerable › Vulnerabilities
CVE-2026-73440: Security Advisory 0178
- Severity: medium (CVSS 4.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-16 · updated 2026-09-16
- Weakness: CWE-212
Description
On affected platforms running Arista EOS with Simple Network Management Protocol (SNMP) configured, SNMPv3 local or remote user credentials may be exposed as a one-way hashed, localized key value within the device's running and sanitized configurations. An authenticated user who gains access to this sensitive information could leverage it to perform unauthorized read operations on SNMP tables or to send fraudulent trap notifications to the Network Management System (NMS). This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.
Affected products
- Arista Networks EOS: from 4.36.0F through 4.36.1F; from 4.35.0F through 4.35.5M; from 4.34.0F through 4.34.7.1M; from 4.33.0F through 4.33.9M; from 1.0.0 before 4.33.0F — fixed in 4.33.0F
How to fix
Upgrade to a fixed version: Arista Networks EOS 4.33.0F. Check the vendor advisory for mitigations.
References
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