CVE-2026-73437
Medium · CVSS 6.5Published 2026-09-15
CVSS
6.5
Medium
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-73437?
On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) relay configured, an unauthenticated attacker with network access could send a crafted DHCP reply packet from an IP address that is not configured as a helper address, and the relay agent would forward it to clients without validating the source. This could allow the attacker to supply clients with malicious network configuration parameters, potentially resulting in traffic interception or denial of service for affected clients.
CVSS Score Explained
CVSS 6.5 is Medium severity. Exploitation usually requires some specific conditions (local access, user interaction, or a particular config). Still worth patching in your next maintenance window.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- PATCHhttps://www.arista.com/en/support/advisories-notices/security-advisory/24712-security-advisory-0156
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