CVE-2007-5378

Status: ModifiedMedium (4.3)—
Buffer overflow in the FileReadGIF function in tkImgGIF.c for Tk Toolkit 8.4.12 and earlier, and 8.3.5 and earlier, allows user-assisted attackers to cause a denial of service (segmentation fault) via an animated GIF in which the first subimage is smaller than a subsequent subimage, which triggers the overflow in the ReadImage function, a different vulnerability than CVE-2007-5137.
CVSS

Version: 2.0
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Base score: 4.3
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 2.64%
Percentile among all scored CVEs: 85
Score date: 10/7/2026
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)

TCL TK — TK Toolkit
CWEs

CWE-119
References

Raw JSON (NVD)

Show
{
  "id": "CVE-2007-5378",
  "cveTags": [],
  "metrics": {
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      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
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      "affectedData": [
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          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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  "published": "2007-10-12T01:17:00.000",
  "references": [
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow in the FileReadGIF function in tkImgGIF.c for Tk Toolkit 8.4.12 and earlier, and 8.3.5 and earlier, allows user-assisted attackers to cause a denial of service (segmentation fault) via an animated GIF in which the first subimage is smaller than a subsequent subimage, which triggers the overflow in the ReadImage function, a different vulnerability than CVE-2007-5137."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de búfer en la función FileReadGIF de tkImgGIF.c para Tk Toolkit 8.4.12 y anteriores, y 8.3.5 y anteriores, permite a atacantes remotos con la intervención del usuario provocar una denegación de servicio (violación de segmento) mediante un GIF animado en el cual la primera sub-imagen es más pequeña que una sub-imagen subsiguiente, lo cual dispara el desbordamiento en la función REadImage, una vulnerabilidad diferente de CVE-2007-5137."
    }
  ],
  "lastModified": "2026-06-16T22:45:59.677",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tcl_tk:tk_toolkit:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "371921AF-2F79-4533-AF84-B586B168FF30",
              "versionEndIncluding": "8.3.5"
            },
            {
              "criteria": "cpe:2.3:a:tcl_tk:tk_toolkit:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6ABF699A-C516-44DB-918F-11E67FD14AFD",
              "versionEndIncluding": "8.4.12"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "Red Hat is aware of this issue and is tracking it via the following bug:\nhttps://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2007-5378\n\nThe Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw.",
      "lastModified": "2007-10-16T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "security@ubuntu.com"
}