CVE-2006-0236

Status: ModifiedMedium (5.1)—

GUI display truncation vulnerability in Mozilla Thunderbird 1.0.2, 1.0.6, and 1.0.7 allows user-assisted attackers to execute arbitrary code via an attachment with a filename containing a large number of spaces ending with a dangerous extension that is not displayed by Thunderbird, along with an inconsistent Content-Type header, which could be used to trick a user into downloading dangerous content by dragging or saving the attachment.

CVSS

Version: 2.0
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P
Base score: 5.1

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 2.06%
Percentile among all scored CVEs: 81
Score date: 10/11/2026

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)

Mozilla — Thunderbird

CWEs

CWE-94

References

Raw JSON (NVD)

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{
  "id": "CVE-2006-0236",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": true,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
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      "affectedData": [
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          "versions": [
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  "published": "2006-01-18T01:07:00.000",
  "references": [
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      "url": "http://secunia.com/advisories/15907",
      "tags": [
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    {
      "url": "http://www.securityfocus.com/archive/1/422148/100/0/threaded",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-94"
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      ]
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  "descriptions": [
    {
      "lang": "en",
      "value": "GUI display truncation vulnerability in Mozilla Thunderbird 1.0.2, 1.0.6, and 1.0.7 allows user-assisted attackers to execute arbitrary code via an attachment with a filename containing a large number of spaces ending with a dangerous extension that is not displayed by Thunderbird, along with an inconsistent Content-Type header, which could be used to trick a user into downloading dangerous content by dragging or saving the attachment."
    }
  ],
  "lastModified": "2026-06-16T22:20:09.737",
  "configurations": [
    {
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        {
          "negate": false,
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            },
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  "vendorComments": [
    {
      "comment": "Not vulnerable.  We verified that this issue does not affect Linux versions of Thunderbird.",
      "lastModified": "2006-08-30T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}