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CVE-2021-28504

Status: ModifiedHigh (7.5)—

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.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Arista — EOS

CWEs

References

Raw JSON (NVD)

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        "source": "nvd@nist.gov",
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          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 2.9,
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  "published": "2022-04-01T23:15:09.380",
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      "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073",
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        "Vendor Advisory"
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    },
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      "lang": "es",
      "value": "En los productos de la familia Arista Strata que tienen habilitada la funcionalidad \"perfil TCAM\", cuando la lista de acceso IPv4 del puerto presenta una regla que coincide con \"vxlan\" como protocolo, esa regla y las reglas posteriores (reglas declaradas después de ella en la ACL) no coinciden con el campo de protocolo IP como era esperado"
    }
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  "lastModified": "2026-06-17T03:46:28.803",
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