This page lists publicly disclosed CVE vulnerabilities affecting arista eos (linked via NVD CPE). Each row includes severity scores, summaries, and publication dates to help identify and analyze security issues.
| CVE | Summary | Source | Max CVSS | EPSS % | Published | Updated |
|---|---|---|---|---|---|---|
| CVE-2026-7473 KEV | On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface—is present, the switch will incorrectly decapsulate and forward other unexpected tunneled packet with a destination IP matching its configured decapsulation IP. This occurs because the switch does not verify the tunnel protocol type, potentially leading to the unexpected processing of non-configured tun | [email protected] | 6.9 | 0.84% | 2026-06-05 | 2026-06-17 |
| CVE-2024-6387 | A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period. | [email protected] | 8.1 | 99.51% | 2024-07-01 | 2026-06-17 |
| CVE-2023-3646 | On affected platforms running Arista EOS with mirroring to multiple destinations configured, an internal system error may trigger a kernel panic and cause system reload. | [email protected] | 5.9 | 0.56% | 2023-08-29 | 2026-06-17 |
| CVE-2023-24548 | On affected platforms running Arista EOS with VXLAN configured, malformed or truncated packets received over a VXLAN tunnel and forwarded in hardware can cause egress ports to be unable to forward packets. The device will continue to be susceptible to the issue until remediation is in place. | [email protected] | 5.3 | 0.47% | 2023-08-29 | 2026-06-17 |
| CVE-2023-24510 | On the affected platforms running EOS, a malformed DHCP packet might cause the DHCP relay agent to restart. | [email protected] | 7.5 | 0.62% | 2023-06-05 | 2026-06-17 |
| CVE-2023-24512 | On affected platforms running Arista EOS, an authorized attacker with permissions to perform gNMI requests could craft a request allowing it to update arbitrary configurations in the switch. This situation occurs only when the Streaming Telemetry Agent (referred to as the TerminAttr agent) is enabled and gNMI access is configured on the agent. Note: This gNMI over the Streaming Telemetry Agent scenario is mostly commonly used when streaming to a 3rd party system and is not used by default when s | [email protected] | 8.8 | 0.60% | 2023-04-25 | 2026-06-17 |
| CVE-2023-24509 | On affected modular platforms running Arista EOS equipped with both redundant supervisor modules and having the redundancy protocol configured with RPR or SSO, an existing unprivileged user can login to the standby supervisor as a root user, leading to a privilege escalation. Valid user credentials are required in order to exploit this vulnerability. | [email protected] | 9.3 | 0.24% | 2023-04-13 | 2026-06-17 |
| CVE-2023-24511 | On affected platforms running Arista EOS with SNMP configured, a specially crafted packet can cause a memory leak in the snmpd process. This may result in the snmpd processing being terminated (causing SNMP requests to time out until snmpd is automatically restarted) and potential memory resource exhaustion for other processes on the switch. The vulnerability does not have any confidentiality or integrity impacts to the system. | [email protected] | 5.3 | 0.84% | 2023-04-12 | 2026-06-17 |
| CVE-2021-28510 | For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invalid Type-Length-Value (TLV) causes the PTP agent to restart. Repeated restarts of the service will make the service unavailable. | [email protected] | 5.3 | 1.00% | 2023-01-26 | 2026-06-16 |
| CVE-2021-28511 | This advisory documents the impact of an internally found vulnerability in Arista EOS for security ACL bypass. The impact of this vulnerability is that the security ACL drop rule might be bypassed if a NAT ACL rule filter with permit action matches the packet flow. This could allow a host with an IP address in a range that matches the range allowed by a NAT ACL and a range denied by a Security ACL to be forwarded incorrectly as it should have been denied by the Security ACL. This can enable an A | [email protected] | 5.8 | 0.49% | 2022-08-05 | 2026-06-16 |
| CVE-2021-28509 | This advisory documents the impact of an internally found vulnerability in Arista EOS state streaming telemetry agent TerminAttr and OpenConfig transport protocols. The impact of this vulnerability is that, in certain conditions, TerminAttr might leak MACsec sensitive data in clear text in CVP to other authorized users, which could cause MACsec traffic to be decrypted or modified by other authorized users on the device. | [email protected] | 6.1 | 0.44% | 2022-05-26 | 2026-06-16 |
| CVE-2021-28508 | This advisory documents the impact of an internally found vulnerability in Arista EOS state streaming telemetry agent TerminAttr and OpenConfig transport protocols. The impact of this vulnerability is that, in certain conditions, TerminAttr might leak IPsec sensitive data in clear text in CVP to other authorized users, which could cause IPsec traffic to be decrypted or modified by other authorized users on the device. | [email protected] | 6.8 | 0.48% | 2022-05-26 | 2026-06-16 |
| CVE-2021-28505 | On affected Arista EOS platforms, if a VXLAN match rule exists in an IPv4 access-list that is applied to the ingress of an L2 or an L3 port/SVI, the VXLAN rule and subsequent ACL rules in that access list will ignore the specified IP protocol. | [email protected] | 7.5 | 0.84% | 2022-04-14 | 2026-06-16 |
| CVE-2021-28504 | On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule which matches on “vxlan” as protocol then that rule and subsequent rules ( rules declared after it in ACL ) do not match on IP protocol field as expected. | [email protected] | 7.5 | 0.69% | 2022-04-01 | 2026-06-16 |
| CVE-2021-28503 | The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI. | [email protected] | 7.4 | 0.72% | 2022-02-04 | 2026-06-16 |
| CVE-2021-28507 | An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent. | [email protected] | 5.5 | 0.67% | 2022-01-14 | 2026-06-16 |
| CVE-2021-28506 | An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device. | [email protected] | 9.1 | 1.42% | 2022-01-14 | 2026-06-16 |
| CVE-2021-28500 | An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration. | [email protected] | 9.1 | 0.87% | 2022-01-14 | 2026-06-16 |
| CVE-2021-28496 | On systems running Arista EOS and CloudEOS with the affected release version, when using shared secret profiles the password configured for use by BiDirectional Forwarding Detection (BFD) will be leaked when displaying output over eAPI or other JSON outputs to other authenticated users on the device. The affected EOS Versions are: all releases in 4.22.x train, 4.23.9 and below releases in the 4.23.x train, 4.24.7 and below releases in the 4.24.x train, 4.25.4 and below releases in the 4.25.x tra | [email protected] | 5.7 | 0.42% | 2021-10-21 | 2026-06-16 |
| CVE-2020-25686 | A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is | [email protected] | 3.7 | 4.91% | 2021-01-20 | 2026-06-16 |