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CVE-2017-13674

Status: ModifiedHigh (7.8)—

Symantec ProxyClient 3.4 for Windows is susceptible to a privilege escalation vulnerability. A malicious local Windows user can, under certain circumstances, exploit this vulnerability to escalate their privileges on the system and execute arbitrary code with LocalSystem privileges.

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)

Symantec — Proxyclient

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2017-13674",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@symantec.com",
      "affectedData": [
        {
          "vendor": "Symantec Corporation",
          "product": "ProxyClient",
          "versions": [
            {
              "status": "affected",
              "version": "3.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-09-01T13:29:00.397",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/100554",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "https://www.symantec.com/security-center/network-protection-security-advisories/SA152",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/100554",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.symantec.com/security-center/network-protection-security-advisories/SA152",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Symantec ProxyClient 3.4 for Windows is susceptible to a privilege escalation vulnerability. A malicious local Windows user can, under certain circumstances, exploit this vulnerability to escalate their privileges on the system and execute arbitrary code with LocalSystem privileges."
    },
    {
      "lang": "es",
      "value": "Symantec ProxyClient 3.4 para Windows es susceptible a una vulnerabilidad de escalado de privilegios. Un usuario malicioso local de Windows puede, en ciertas circunstancias, explotar esta vulnerabilidad para escalar sus privilegios en el sistema y ejecutar código arbitrario con privilegios LocalSystem."
    }
  ],
  "lastModified": "2026-06-17T01:04:57.810",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:symantec:proxyclient:3.4:*:*:*:*:windows:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2BD11FE5-E7C4-4A69-BC75-62EBD9BF3DA7"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@symantec.com"
}