Arista Networks EOS 802.1X Per-Supplicant ACL Bypass (SA0150) (CVE-2026-75943)

The version of Arista Networks EOS running on the remote device is affected by an access control bypass vulnerability as referenced in security advisory SA0150. - On affected releases of Arista EOS configured as an 802.1X authenticator with per-supplicant access control lists, traffic from an...

Arista Networks EOS P4Runtime Arbitrary Code Execution (SA0174)

The version of Arista Networks EOS running on the remote device is affected by a code injection vulnerability as referenced in security advisory SA0174. - An unauthenticated P4Runtime Programming Protocol-Independent Packet Processors Runtime client can achieve arbitrary code execution under...

Arista Networks EOS 802.1X Per-Supplicant ACL Bypass (SA0150) (CVE-2026-77191)

The version of Arista Networks EOS running on the remote device is affected by an access control bypass vulnerability as referenced in security advisory SA0150. - On affected releases of Arista EOS configured as an 802.1X authenticator with per-supplicant access control lists, the ACL assigned to...

CVE-2026-73460

CVE-2026-73460 affects Arista EOS running with IS-IS graceful restart enabled. An unauthenticated attacker in the same Layer 2 domain can inject a malformed IS-IS LSP PDU, causing the graceful restart procedure to terminate prematurely and resulting in traffic loss after a restart event. The unde...

CVE-2026-73459 Security Advisory 0160

On affected platforms running Arista EOS with IS-IS configured, an unauthenticated attacker who can inject a specially crafted IS-IS LSP PDU can cause the legitimate LSP to be unexpectedly purged from the IS-IS link-state database. This may result in traffic loss...

CVE-2026-73459

CVE-2026-73459 affects Arista EOS with IS-IS configured (versions 4.36.1F and below in the 4.36.x train). An unauthenticated attacker in the same Layer 2 domain can inject a specially crafted IS-IS LSP PDU, causing the legitimate LSP to be purged from the link-state database due to a checksum val...

CVE-2026-73446 Security Advisory 0160

On affected platforms running Arista EOS with IS-IS configured on a broadcast interface, an unauthenticated attacker can send a crafted IS-IS Hello Protocol Data Unit PDU that causes the device to tear down an established IS-IS adjacency. This may result in traffic disruption and loss of IP...

CVE-2026-73446

CVE-2026-73446 affects Arista EOS on multiple hardware platforms (710, 720D, 720XP, 750X, 7010TX, 7020R, 7130, 7170, 7050X, 7060X, 7260X, 7280R, 7300X, 7320X, 7358X4, 7368X4, 7388X5, 7500R, 7800R, 7700R, AWE, CloudEOS, cEOS/vEOS-lab, CloudVision eXchange). When IS-IS is configured on a broadcast ...

CVE-2026-73444

On affected platforms running Arista EOS with VRRPv2 IP Authentication Header IP-AH authentication configured, an unauthenticated attacker with access to the layer 2 network segment on which VRRP is running could bypass VRRP authentication and claim the virtual router master role, enabling the...

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...

CVE-2026-19655

On affected platforms running Arista EOS with Dynamic Host Configuration Protocol DHCP relay/snooping configured with the information option Option 82, or with the DHCP server configured with match criteria based on the information option, an unauthenticated attacker connected to a client-facing...

CVE-2026-73444

CVE-2026-73444 affects Arista EOS switches where VRRPv2 is configured with IP-AH authentication enabled. An unauthenticated attacker with access to the layer 2 network segment can bypass VRRP authentication and claim the virtual router master role, enabling them to intercept, modify, or discard t...

CVE-2026-73444 On affected platforms running Arista EOS with VRRPv2 IP Authentication Header (IP-AH) authentication configured, an unauthenticated attacker with access to the layer 2 network segment on which VRRP is running could bypass VRRP authentication and claim the

On affected platforms running Arista EOS with VRRPv2 IP Authentication Header IP-AH authentication configured, an unauthenticated attacker with access to the layer 2 network segment on which VRRP is running could bypass VRRP authentication and claim the virtual router master role, enabling the...

CVE-2026-73437

Arista EOS DHCP relay is vulnerable to spoofed DHCP reply forwarding (CWE-345). An unauthenticated attacker on an adjacent network can send crafted DHCP reply packets from a non-helper IP address, which the relay forwards to clients without source validation, potentially supplying malicious netwo...

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/destinat

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...

CVE-2026-19655 On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) relay/snooping configured with the information option (Option 82), or with the DHCP server configured with match criteria based on the information option, an unauthent

On affected platforms running Arista EOS with Dynamic Host Configuration Protocol DHCP relay/snooping configured with the information option Option 82, or with the DHCP server configured with match criteria based on the information option, an unauthenticated attacker connected to a client-facing...

CVE-2026-19655

CVE-2026-19655 affects Arista EOS when DHCP relay/snooping is configured with Option 82 (information option) or when the DHCP server uses match criteria based on that option. An unauthenticated attacker on a client-facing VLAN can send a specially crafted packet that triggers a DHCP Relay service...

EUVD-2026-80003

On affected platforms running Arista EOS with Dynamic Host Configuration Protocol DHCP relay/snooping configured with the information option Option 82, or with the DHCP server configured with match criteria based on the information option, an unauthenticated attacker connected to a client-facing...

CVE-2026-73458

On affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detection BFD sessions configured, a specially crafted packet can cause the BFD sessions to go down. This may result in undesirable network changes because various routing protocols monitor status on BFD sessions...

EUVD-2026-79238

On affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detection BFD sessions configured, a specially crafted packet can cause the BFD sessions to go down. This may result in undesirable network changes because various routing protocols monitor status on BFD sessions...