Arista Networks EOS vulnerabilities
76 vulnerabilities
Known vulnerabilities in Arista Networks EOS, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.
CVE-2021-28506arista networkseos+1
EPSS score1.42%
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.CVE-2021-28510arista networkseos+1EPSS score1.00%
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.CVE-2021-28505arista networkseos+1EPSS score0.88%
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.CVE-2021-28504arista networkseos+1EPSS score0.73%
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.CVE-2021-28511arista networkseos+1EPSS score0.58%
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 ACL bypass.CVE-2021-28507arista networkseos+1EPSS score0.67%
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.CVE-2025-2796arista networkseosEPSS score0.19%
On affected platforms with hardware IPSec support running Arista EOS with IPsec enabled and anti-replay protection configured, EOS may exhibit unexpected behavior in specific cases. Received duplicate encrypted packets, which should be dropped under normal anti-replay protection, will instead be forwarded due to this vulnerability.
Note: this issue does not affect VXLANSec or MACSec encryption functionality.CVE-2025-2826arista networkseosEPSS score0.52%
n affected platforms running Arista EOS, ACL policies may not be enforced. IPv4 ingress ACL, MAC ingress ACL, or IPv6 standard ingress ACL enabled on one or more ethernet or LAG interfaces may result in ACL policies not being enforced for ingress packets. This can cause incoming packets to incorrectly be allowed or denied. The two symptoms of this issue on the affected release and platform are:
* Packets which should be permitted may be dropped and,
* Packets which should be dropped may be permitted.CVE-2025-1259arista networkseosEPSS score0.35%
On affected platforms running Arista EOS with OpenConfig configured, a gNOI request can be run when it should have been rejected. This issue can result in users retrieving data that should not have been availableCVE-2025-1260arista networkseosEPSS score0.44%
On affected platforms running Arista EOS with OpenConfig configured, a gNOI request can be run when it should have been rejected. This issue can result in unexpected configuration/operations being applied to the switch.CVE-2025-0936arista networkseosEPSS score0.28%
On affected platforms running Arista EOS with a gNMI transport enabled, running the gNOI File TransferToRemote RPC with credentials for a remote server may cause these remote-server credentials to be logged or accounted on the local EOS device or possibly on other remote accounting servers (i.e. TACACS, RADIUS, etc).CVE-2025-7048arista networkseosEPSS score0.19%
On affected platforms running Arista EOS with MACsec configuration, a specially crafted packet can cause the MACsec process to terminate unexpectedly. Continuous receipt of these packets with certain MACsec configurations can cause longer term disruption of dataplane traffic.CVE-2025-6188arista networkseosEPSS score0.42%
On affected platforms running Arista EOS, maliciously formed UDP packets with source port 3503 may be accepted by EOS. UDP Port 3503 is associated with LspPing Echo Reply. This can result in unexpected behaviors, especially for UDP based services that do not perform some form of authentication.CVE-2025-8873arista networkseosEPSS score0.39%
On affected platforms running Arista EOS with IPsec configured, a specially crafted packet can cause the dataplane to stop processing all IPsec traffic. The control plane may detect this condition, and attempt to reset the IPsec processing pipeline. After reset traffic may not resume being processed. There is no impact to non-IPsec traffic or to IPsec traffic not originating or terminating on the system. This issue was reported by an Arista customer.CVE-2025-8872arista networkseosEPSS score0.30%
On affected platforms running Arista EOS with OSPFv3 configured, a specially crafted packet can cause the OSFPv3 process to have high CPU utilization which may result in the OSFPv3 process being restarted. This may cause disruption in the OSFPv3 routes on the switch.
This issue was discovered internally by Arista and is not aware of any malicious uses of this issue in customer networks.CVE-2025-8870arista networkseosEPSS score0.18%
On affected platforms running Arista EOS, certain serial console input might result in an unexpected reload of the device.153CVE-2025-3456arista networkseosEPSS score0.10%
On affected platforms running Arista EOS, the global common encryption key configuration may be logged in clear text, in local or remote accounting logs. Knowledge of both the encryption key and protocol specific encrypted secrets from the device running-config could then be used to obtain protocol specific passwords in cases where symmetric passwords are required between devices with neighbor protocol relationships.CVE-2024-11185arista networkseosEPSS score0.26%
On affected platforms running Arista EOS, ingress traffic on Layer 2 ports may, under certain conditions, be improperly forwarded to ports associated with different VLANs, resulting in a breach of VLAN isolation and segmentation boundaries.CVE-2024-9135arista networkseosEPSS score0.36%
On affected platforms running Arista EOS with BGP Link State configured, BGP peer flap can cause the BGP agent to leak memory. This may result in BGP routing processing being terminated and route flapping.CVE-2024-9448arista networkseosEPSS score0.59%
On affected platforms running Arista EOS with Traffic Policies configured the vulnerability will cause received untagged packets not to hit Traffic Policy rules that they are expected to hit. If the rule was to drop the packet, the packet will not be dropped and instead will be forwarded as if the rule was not in place. This could lead to packets being delivered to unexpected destinations.