CVE-2026-76726 (GCVE-0-2026-76726)

Vulnerability from cvelistv5 – Published: 2026-09-29 19:28 – Updated: 2026-09-29 19:28
VLAI
Title
Authentication Bypass Leading to Unauthorized Network Access in HPE Networking Instant ON API Endpoint
Summary
An authentication bypass vulnerability in the API endpoint of HPE Networking Instant ON could allow an unauthenticated remote attacker to bypass network access controls if certain preconditions outside of the attacker's control are met. Successful exploitation could allow an attacker to obtain unauthorized access to restricted networks.
Impacted products
Vendor Product Version CPE status
Hewlett Packard Enterprise (HPE) Instant ON Affected: 0.0.0.0 , ≤ 3.4.1.0 (semver)
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Instant ON",
          "vendor": "Hewlett Packard Enterprise (HPE)",
          "versions": [
            {
              "lessThanOrEqual": "3.4.1.0",
              "status": "affected",
              "version": "0.0.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Internal security research (HPE Networking)."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An authentication bypass vulnerability in the API endpoint of HPE Networking Instant ON could allow an unauthenticated remote attacker to bypass network access controls if certain preconditions outside of the attacker\u0027s control are met. Successful exploitation could allow an attacker to obtain unauthorized access to restricted networks."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T19:28:40.357Z",
        "orgId": "eb103674-0d28-4225-80f8-39fb86215de0",
        "shortName": "hpe"
      },
      "references": [
        {
          "url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05150en_us\u0026docLocale=en_US"
        }
      ],
      "source": {
        "advisory": "HPESBNW05150",
        "discovery": "INTERNAL"
      },
      "title": "Authentication Bypass Leading to Unauthorized Network Access in HPE Networking Instant ON API Endpoint",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "eb103674-0d28-4225-80f8-39fb86215de0",
    "assignerShortName": "hpe",
    "cveId": "CVE-2026-76726",
    "datePublished": "2026-09-29T19:28:40.357Z",
    "dateReserved": "2026-08-19T16:13:18.139Z",
    "dateUpdated": "2026-09-29T19:28:40.357Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "affected",
                "product": "Instant ON",
                "vendor": "Hewlett Packard Enterprise (HPE)",
                "versions": [
                  {
                    "lessThanOrEqual": "3.4.1.0",
                    "status": "affected",
                    "version": "0.0.0.0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security-alert@hpe.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "An authentication bypass vulnerability in the API endpoint of HPE Networking Instant ON could allow an unauthenticated remote attacker to bypass network access controls if certain preconditions outside of the attacker\u0027s control are met. Successful exploitation could allow an attacker to obtain unauthorized access to restricted networks."
          }
        ],
        "id": "CVE-2026-76726",
        "lastModified": "2026-09-29T21:39:02.570",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 5.9,
              "source": "security-alert@hpe.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-29T20:17:24.707",
        "references": [
          {
            "source": "security-alert@hpe.com",
            "url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05150en_us\u0026docLocale=en_US"
          }
        ],
        "sourceIdentifier": "security-alert@hpe.com",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

Loading…

Loading…

Loading…

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


Loading…