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CVE-2021-31479

Status: ModifiedHigh (7.8)—

This vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PDF files. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12634.

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)

Opentext — Brava! Desktop

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-31479",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
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    "cvssMetricV30": [
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        "type": "Secondary",
        "source": "zdi-disclosures@trendmicro.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
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          "confidentialityImpact": "HIGH"
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  "affected": [
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      "affectedData": [
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          "product": "Brava! Desktop",
          "versions": [
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              "status": "affected",
              "version": "16.6.3.84"
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  ],
  "published": "2021-06-15T19:15:08.170",
  "references": [
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      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-619/",
      "tags": [
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        "VDB Entry"
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      "source": "zdi-disclosures@trendmicro.com"
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    {
      "url": "https://www.cvedetails.com/vulnerability-list/vendor_id-2032/product_id-96672/Opentext-Brava-Desktop.html?page=1&opec=1&order=1&trc=35&sha=37f4ed0596f8ccacca7d571f22a38c97b0f19f4c",
      "tags": [
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      "source": "nvd@nist.gov"
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    {
      "url": "https://www.opentext.com/products/brava",
      "tags": [
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      "source": "nvd@nist.gov"
    },
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-619/",
      "tags": [
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        "VDB Entry"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "zdi-disclosures@trendmicro.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-824"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PDF files. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12634."
    },
    {
      "lang": "es",
      "value": "Esta vulnerabilidad permite a atacantes remotos ejecutar código arbitrario en las instalaciones afectadas de OpenText Brava! Desktop versión 16.6.3.84. Es requerida una interacción del usuario para explotar esta vulnerabilidad, en la que el objetivo debe visitar una página maliciosa o abrir un archivo malicioso. El fallo específico se presenta en el análisis de archivos PDF. El problema resulta de una falta de inicialización apropiada de un puntero antes de acceder a él. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto del proceso actual. Fue ZDI-CAN-12634"
    }
  ],
  "lastModified": "2026-06-17T03:51:52.433",
  "configurations": [
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        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:opentext:brava\\!_desktop:16.6.3.84:*:*:*:*:*:*:*",
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  "sourceIdentifier": "zdi-disclosures@trendmicro.com"
}