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    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.

    Published:Jan 14, 2022
    Last Modified:Nov 21, 2024
    EPS:Jan 14, 2022
    EPSS Score:0.00312
    CVSS Score:9.1

    Affected Products

    Vendor
    Arista
    Product
    Eos

    Exploits

    https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071

    Common Weakness Enumeration

    CWE-285 Improper Authorization

    Related CVEs

    CVE-2026-2379 (CVSS 8.2) — On affected platforms with hardware IPSec support running Arista EOS with certain IPsec features enabled, EOS …
    CVE-2026-7473 (CVSS 6.9) — On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Ext…
    CVE-2025-8873 (CVSS 8.7) — On affected platforms running Arista EOS with IPsec configured, a specially crafted packet can cause the datap…
    CVE-2023-5502 (CVSS 8.2) — On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, and …
    CVE-2024-27892 (CVSS 7.2) — Affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should…
    CVE-2024-27890 (CVSS 7.2) — Affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should…
    CVE-2024-27891 (CVSS 6.9) — On affected platforms running Arista EOS with MACsec and egress ACLs configured on the same interfaces, the AC…
    CVE-2024-6858 (CVSS 6.5) — In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed access to a switch port…
    CVE-2025-7048 (CVSS 5.3) — On affected platforms running Arista EOS with MACsec configuration, a specially crafted packet can cause the M…
    CVE-2025-8872 (CVSS 7.1) — On affected platforms running Arista EOS with OSPFv3 configured, a specially crafted packet can cause the OSFP…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High