Vulnerability-Lookup

GHSA-XMJQ-J83C-Q6G4

Vulnerability from github – Published: 2026-06-05 18:31 – Updated: 2026-06-05 18:31

Details

In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

7.1 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-5089"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-05T17:16:30Z",
    "severity": "HIGH"
  },
  "details": "In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted.",
  "id": "GHSA-xmjq-j83c-q6g4",
  "modified": "2026-06-05T18:31:39Z",
  "published": "2026-06-05T18:31:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5089"
    },
    {
      "type": "WEB",
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-5089 (GCVE-0-2025-5089)

Vulnerability from cvelistv5 – Published: 2026-06-05 15:44 – Updated: 2026-06-05 15:44

Title

Arista EOS SysDB Agent Denial of Service via Malformed CVX Client/Server Messages

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CWE

CWE-20 - Improper Input Validation

Assigner

Arista

References

1 reference

URL	Tags
https://www.arista.com/en/support/advisories-noti…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Arista Networks	EOS / CloudVision eXchange (CVX)	Affected: 4.34.0F , ≤ 4.34.1F (custom) Affected: 4.33.0M , ≤ 4.33.4M (custom) Affected: 4.32.0M , ≤ 4.32.6M (custom) Affected: 4.31.0M , ≤ 4.31.8M (custom) Affected: 4.30.0 , < 4.31.0 (custom)

Date Public

2025-12-18 16:40

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "CloudVision eXchange",
            "virtual or physical appliance"
          ],
          "product": "EOS / CloudVision eXchange (CVX)",
          "vendor": "Arista Networks",
          "versions": [
            {
              "lessThanOrEqual": "4.34.1F",
              "status": "affected",
              "version": "4.34.0F",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.33.4M",
              "status": "affected",
              "version": "4.33.0M",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.32.6M",
              "status": "affected",
              "version": "4.32.0M",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.31.8M",
              "status": "affected",
              "version": "4.31.0M",
              "versionType": "custom"
            },
            {
              "lessThan": "4.31.0",
              "status": "affected",
              "version": "4.30.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIn order to be vulnerable to CVE-2025-5089, the following condition must be met: CVX must be configured:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003ecvx1#show cvx\n  Status: Enabled\n  Mode: Standalone\n  Heartbeat interval: 20.0\n  Heartbeat timeout: 60.0\n  Client connection state preserving: Disabled\n  \ncvx1#show running-config section cvx\ncvx\n   no shutdown\u003c/code\u003e\u003c/pre\u003e"
            }
          ],
          "value": "In order to be vulnerable to CVE-2025-5089, the following condition must be met: CVX must be configured:\n\n\n\n\ncvx1#show cvx\n  Status: Enabled\n  Mode: Standalone\n  Heartbeat interval: 20.0\n  Heartbeat timeout: 60.0\n  Client connection state preserving: Disabled\n  \ncvx1#show running-config section cvx\ncvx\n   no shutdown"
        }
      ],
      "datePublic": "2025-12-18T16:40:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIn a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted.\u003c/p\u003e"
            }
          ],
          "value": "In a CVX cluster, an EOS switch connected to a CVX server is not resilient to certain malformed messages received from the connected CVX server. Similarly, the CVX server is not resilient to certain malformed messages received from the connected EOS switch. This leads to either a Sysdb agent crash on the EOS device causing a soft reset of the switch or agent crashes on the CVX server causing instability of the CVX cluster. An attacker could use this behavior to create a denial of service (DoS) scenario. Note that this would require the attacker to already have a high privilege access to the connected device to be able to send custom TCP packets. EOS switches that are not connected to a CVX server are not impacted."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-05T15:44:45.822Z",
        "orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
        "shortName": "Arista"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/22868-security-advisory-0126"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eThe recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5089 has been fixed in the following releases:\u003c/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4.34.2F and later releases in the 4.34.x train\u003c/li\u003e\n  \u003cli\u003e4.33.5M and later releases in the 4.33.x train\u003c/li\u003e\n  \u003cli\u003e4.32.7M and later releases in the 4.32.x train\u003c/li\u003e\n  \u003cli\u003e4.31.9M and later releases in the 4.31.x train\u003c/li\u003e\n\u003c/ul\u003e"
            }
          ],
          "value": "The recommended resolution is to upgrade to a remediated software version at your earliest convenience. CVE-2025-5089 has been fixed in the following releases:\n\n\n\n    *  4.34.2F and later releases in the 4.34.x train\n\n    *  4.33.5M and later releases in the 4.33.x train\n\n    *  4.32.7M and later releases in the 4.32.x train\n\n    *  4.31.9M and later releases in the 4.31.x train"
        }
      ],
      "source": {
        "advisory": "0126",
        "defect": [
          "BUG1140255"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Arista EOS SysDB Agent Denial of Service via Malformed CVX Client/Server Messages",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eThere is no mitigation for this issue.\u003c/p\u003e"
            }
          ],
          "value": "There is no mitigation for this issue."
        }
      ],
      "x_capecAlignment": {
        "capecId": "CAPEC-125",
        "capecName": "Flooding / Malformed Packet",
        "justification": "The attack leverages structurally malformed message payloads communicated over a trusted client/server connection interface to trigger unhandled parser logic, inducing an agent process crash (Denial of Service)."
      },
      "x_generator": {
        "engine": "Vulnogram"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
    "assignerShortName": "Arista",
    "cveId": "CVE-2025-5089",
    "datePublished": "2026-06-05T15:44:45.822Z",
    "dateReserved": "2025-05-22T16:26:45.461Z",
    "dateUpdated": "2026-06-05T15:44:45.822Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-XMJQ-J83C-Q6G4

CVE-2025-5089 (GCVE-0-2025-5089)

Tags

Sightings

Nomenclature