CVE-2024-27891 On affected platforms running Arista EOS with MACsec and egress ACLs configured on the same interfaces, the ACL policies may not be enforced for packets egressing on those ports.

On affected platforms running Arista EOS with MACsec and egress ACLs configured on the same interfaces, the ACL policies may not be enforced for packets egressing on those ports. This can cause outgoing packets to incorrectly be allowed or denied...

CVE-2024-27891 On affected platforms running Arista EOS with MACsec and egress ACLs configured on the same interfaces, the ACL policies may not be enforced for packets egressing on those ports.

On affected platforms running Arista EOS with MACsec and egress ACLs configured on the same interfaces, the ACL policies may not be enforced for packets egressing on those ports. This can cause outgoing packets to incorrectly be allowed or denied...

CVE-2024-27891

Arista CVE-2024-27891 affects EOS platforms where MACsec and outbound egress ACLs are on the same interface, potentially causing ACL policies to not be enforced for egress packets. Affected EOS releases include 4.32.x (4.32.0.1F and below), 4.31.x (4.31.2F and below), 4.30.x (4.30.6M and below), ...

CVE-2024-6858 In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed access to a switch port if there exists an EAPOL capable device in the fallback VLAN.

In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed access to a switch port if there exists an EAPOL capable device in the fallback VLAN...

CVE-2024-6858 In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed access to a switch port if there exists an EAPOL capable device in the fallback VLAN.

In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed access to a switch port if there exists an EAPOL capable device in the fallback VLAN...

CVE-2024-6858

In Arista EOS, CVE-2024-6858 affects multiple EOS releases (EOS 4.31.x, 4.30.x, 4.29.x, 4.28.x) where 802.1X is enabled and a fallback VLAN with an EAPOL-capable device can allow multi-auth unauthenticated hosts access to a switch port. Root cause: improper authentication handling when using dot1...

PT-2026-46407

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...

PT-2026-46397

Name of the Vulnerable Software and Affected Versions Arista EOS affected versions not specified Description Platforms running Arista EOS with OpenConfig configured may process a gNMI Set request that should have been rejected. This flaw allows unexpected configurations to be applied to the switc...

Arista EOS 安全漏洞

Arista EOS is a fully programmable, highly modular Linux-based network operating system developed by the American company Arista. There is a security vulnerability in Arista EOS, which arises from the situation where configuring MACsec and outbound ACLs on the same interface may cause the ACL...

PT-2026-46392

Name of the Vulnerable Software and Affected Versions Arista EOS affected versions not specified Description When operating in 802.1X mode, multi-auth unauthenticated hosts may be granted unauthorized access to a switch port if an EAPOL Extensible Authentication Protocol over LAN capable device i...

Arista EOS 安全漏洞

Arista EOS is a fully programmable, highly modular Linux-based network operating system developed by the American company Arista. There is a security vulnerability in Arista EOS, which stems from the fact that when configuring OpenConfig, a gNMI Set request that should be rejected may still be...

Arista EOS 安全漏洞

Arista EOS is a fully programmable, highly modular Linux-based network operating system developed by the American company Arista. There is a security vulnerability in Arista EOS, which stems from the fact that under 802.1X mode, if there are devices supporting EAPOL in the back-end VLAN,...

Arista EOS 安全漏洞

Arista EOS is a fully programmable, highly modular Linux-based network operating system developed by the American company Arista. There is a security vulnerability in Arista EOS, which stems from the fact that when configuring OpenConfig, a gNMI Set request that should be rejected may still be...

Arista EOS 安全漏洞

Arista EOS is a fully programmable, highly modular Linux-based network operating system developed by the American company Arista. There is a security vulnerability in Arista EOS, which stems from the possibility for malicious attackers to bypass the 802.1x authentication requirements when...

PT-2026-46395

Name of the Vulnerable Software and Affected Versions Arista EOS affected versions not specified Description Platforms running Arista EOS with OpenConfig configured may process a gNMI Set request that should have been rejected. This flaw allows unexpected configurations to be applied to the switc...

PT-2026-46396

Name of the Vulnerable Software and Affected Versions Arista EOS affected versions not specified Description On affected platforms running Arista EOS with MACsec and egress ACLs configured on the same interfaces, the ACL policies may not be enforced for packets egressing on those ports. This...

Arista EOS 安全漏洞

Arista EOS is a fully programmable, highly modular Linux-based network operating system developed by the American company Arista. There is a security vulnerability in Arista EOS. This vulnerability arises when configuring IPsec, where specially crafted packets may cause the data plane to stop...

Security Advisory 0140

Security Advisory 0140 PDF Date: June 3, 2026 Revision | Date | Changes ---|---|--- 1.0 | June 3, 2026 | Initial release The CVE-ID tracking this issue: CVE-2026-10040 CVSSv3.1 Base Score: 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H CVSSv4.0 Base Score: 6.8...

Security Advisory 0138

Security Advisory 0138 PDF Date: May 8, 2026 Revision | Date | Changes ---|---|--- 1.0 | May 8, 2026 | Initial release 1.1 | May 18, 2026 | Updated affected products and added Mitigation section 1.2 | July 15, 2026 | Updated CVE-ID's tracking this issue Updated Affected Software Added Resolution...

VulnCheck KEV: CVE-2026-7473

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...