FKIE_CVE-2026-2379

Vulnerability from fkie_nvd - Published: 2026-06-05 18:17 - Updated: 2026-06-17 10:30
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
On affected platforms with hardware IPSec support running Arista EOS with certain IPsec features enabled, EOS may exhibit unexpected behavior in specific cases. Physical interface flaps and certain agent restarts can cause IPsec tunnel re-establishment with existing Security Associations, resulting in sequence number mismatches between tunnel endpoints potentially causing unstable communication.
References
psirt@arista.comhttps://www.arista.com/en/support/advisories-notices/security-advisory/23419-security-advisory-0134
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "7280R3 Series with IPsec (DCS-7280SR3AK",
            "DCS-7280SR3AM",
            "DCS-7280CR3AK",
            "DCS-7280CR3AM",
            "DCS-7280CR3MK",
            "DCS-7280DR3AK",
            "DCS-7280DR3AM",
            "DCS-7289R3AK-SC",
            "DCS-7289R3AM-SC)",
            "7800R3 Series with IPsec (7800R3A-36DM-LC",
            "7800R3AK-36DM-LC",
            "7800R3A-36PM-LC",
            "7800R3AK-36PM-LC",
            "7800R3A-36DM2-LC",
            "7800R3AK-36DM2-LC)",
            "AWE 7000 Series with IPsec (AWE-7250R-16S-F",
            "AWE-7230R-4TX-4S-F",
            "AWE-7220RP-5TH-2S-F)",
            "AWE 5000 Series with IPsec (AWE-5510",
            "AWE-5310)",
            "CloudEOS VM"
          ],
          "product": "EOS",
          "vendor": "Arista Networks",
          "versions": [
            {
              "lessThanOrEqual": "4.34.3M",
              "status": "affected",
              "version": "4.34.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.33.5M",
              "status": "affected",
              "version": "4.33.0M",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.32.7M",
              "status": "affected",
              "version": "4.32.0M",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.31.9M",
              "status": "affected",
              "version": "4.31.0M",
              "versionType": "custom"
            },
            {
              "lessThan": "4.31.0",
              "status": "affected",
              "version": "4.30.0F",
              "versionType": "custom"
            },
            {
              "lessThan": "4.30.0",
              "status": "affected",
              "version": "4.29.0F",
              "versionType": "custom"
            },
            {
              "lessThan": "4.29.0",
              "status": "affected",
              "version": "4.28.0F",
              "versionType": "custom"
            },
            {
              "lessThan": "4.28.0",
              "status": "affected",
              "version": "4.27.1F",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "psirt@arista.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "On affected platforms with hardware IPSec support running Arista EOS with certain IPsec features enabled, EOS may exhibit unexpected behavior in specific cases. Physical interface flaps and certain agent restarts can cause IPsec tunnel re-establishment with existing Security Associations, resulting in sequence number mismatches between tunnel endpoints potentially causing unstable communication."
    }
  ],
  "id": "CVE-2026-2379",
  "lastModified": "2026-06-17T10:30:52.290",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "psirt@arista.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "psirt@arista.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-2379",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-09T14:15:34.481934Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-05T18:17:05.750",
  "references": [
    {
      "source": "psirt@arista.com",
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/23419-security-advisory-0134"
    }
  ],
  "sourceIdentifier": "psirt@arista.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-672"
        }
      ],
      "source": "psirt@arista.com",
      "type": "Secondary"
    }
  ]
}


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