FKIE_CVE-2025-7635

Vulnerability from fkie_nvd - Published: 2025-09-09 20:15 - Updated: 2025-12-22 20:01
Severity ?
7.7 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.
References
help@fluidattacks.comhttps://fluidattacks.com/advisories/salExploit, Mitigation, Third Party Advisory
help@fluidattacks.comhttps://revers3everything.com/calix-case-five-0-days-five-cves/Third Party Advisory
help@fluidattacks.comhttps://www.calix.comProduct
134c704f-9b21-4f2e-91b3-4a467353bcc0https://fluidattacks.com/advisories/salExploit, Mitigation, Third Party Advisory
Impacted products
Vendor Product Version
calix calix_gigacenter_ont *
calix calix_gigacenter_ont 844e
calix calix_gigacenter_ont 844g
calix calix_gigacenter_ont 844ge
calix calix_gigacenter_ont 854ge
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{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E285ED64-5A84-408D-82C0-2884BCFAB9D1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:844e:*:*:*:*:*:*:*",
              "matchCriteriaId": "FADBB0EC-3887-4479-BD00-0B5C889F762A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:844g:*:*:*:*:*:*:*",
              "matchCriteriaId": "84BC001C-DA8C-4A29-B7F6-158FC235669F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:844ge:*:*:*:*:*:*:*",
              "matchCriteriaId": "B7C3D463-3D1F-4EB4-9E2B-EA828589CDBE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:854ge:*:*:*:*:*:*:*",
              "matchCriteriaId": "68F177AF-338D-4637-BE70-103C2DD2DC5C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE."
    }
  ],
  "id": "CVE-2025-7635",
  "lastModified": "2025-12-22T20:01:56.000",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "ADJACENT",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "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:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "help@fluidattacks.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-09-09T20:15:50.673",
  "references": [
    {
      "source": "help@fluidattacks.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://fluidattacks.com/advisories/sal"
    },
    {
      "source": "help@fluidattacks.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://revers3everything.com/calix-case-five-0-days-five-cves/"
    },
    {
      "source": "help@fluidattacks.com",
      "tags": [
        "Product"
      ],
      "url": "https://www.calix.com"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://fluidattacks.com/advisories/sal"
    }
  ],
  "sourceIdentifier": "help@fluidattacks.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "help@fluidattacks.com",
      "type": "Secondary"
    }
  ]
}


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Sightings

Author Source Type Date

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.