CVE-2026-21770

Full vulnerability record from the local CVENow database.

Description

HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a DLL hijacking vulnerability which could allow an attacker to modify or replace the application with malicious content.

Severity

MEDIUM

CVSS score

6.5 (v3.1)

Vulnerability status

Deferred

Source identifier

[email protected]

Published

2026-07-17 05:16:38.567000

Last modified

2026-10-24 20:10:00.137000

View original CVE JSON

{
  "id": "CVE-2026-21770",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-17T05:16:38.567",
  "lastModified": "2026-10-24T20:10:00.137",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a DLL hijacking vulnerability which could allow an attacker to modify or replace the application with malicious content."
    },
    {
      "lang": "es",
      "value": "HCL Traveler para Microsoft Outlook (HTMO) es susceptible a una vulnerabilidad de secuestro de DLL que podría permitir a un atacante modificar o reemplazar la aplicación con contenido malicioso."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "HCLSoftware",
          "product": "HCL Traveler for Microsoft Outlook (HTMO)",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "< 3.0.16",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 0.6,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-17T13:03:54.584105Z",
          "id": "CVE-2026-21770",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-427"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0130919",
      "source": "[email protected]"
    }
  ]
}