FKIE_CVE-2025-31703

Vulnerability from fkie_nvd - Published: 2026-03-18 08:16 - Updated: 2026-06-17 09:10
Severity
2.4 (Low) - CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Summary
A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell's authentication mechanism to escalate privileges.
References
cybersecurity@dahuatech.comhttps://www.dahuasecurity.com/about-dahua/trust-center/dahua-psirt/security-advisory-%E2%80%93-vulnerability-found-in-dahua-nvr-xvr-device
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "NVR2-4KS3",
          "vendor": "dahua",
          "versions": [
            {
              "status": "affected",
              "version": "Versions which Build time prior to 3rd March 2026"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "XVR4232AN-I/T",
          "vendor": "dahua",
          "versions": [
            {
              "status": "affected",
              "version": "Versions which Build time prior to 3rd March 2026"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "XVR1B16H-I/T",
          "vendor": "dahua",
          "versions": [
            {
              "status": "affected",
              "version": "Versions which Build time prior to 3rd March 2026"
            }
          ]
        }
      ],
      "source": "cybersecurity@dahuatech.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell\u0027s authentication mechanism to escalate privileges."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad encontrada en un dispositivo Dahua NVR/XVR. Un atacante malicioso de terceros con acceso f\u00edsico al dispositivo puede obtener acceso a un shell restringido a trav\u00e9s del puerto serie y omite el mecanismo de autenticaci\u00f3n del shell para escalar privilegios."
    }
  ],
  "id": "CVE-2025-31703",
  "lastModified": "2026-06-17T09:10:48.660",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "PHYSICAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.4,
          "baseSeverity": "LOW",
          "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": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/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": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cybersecurity@dahuatech.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-31703",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-03-18T14:09:19.621439Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-03-18T08:16:26.810",
  "references": [
    {
      "source": "cybersecurity@dahuatech.com",
      "url": "https://www.dahuasecurity.com/about-dahua/trust-center/dahua-psirt/security-advisory-%E2%80%93-vulnerability-found-in-dahua-nvr-xvr-device"
    }
  ],
  "sourceIdentifier": "cybersecurity@dahuatech.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-305"
        }
      ],
      "source": "cybersecurity@dahuatech.com",
      "type": "Secondary"
    }
  ]
}



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