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Security advisory

Type: advisorySources: OSVCVE: CVE-2021-20310

A flaw was found in ImageMagick in versions before 7.0.11, where a division by zero ConvertXYZToJzazbz() of MagickCore/colorspace.c may trigger undefined behavior via a crafted image file that is submitted by an attacker and processed by an application using ImageMagick. The highest threat from this vulnerability is to system availability.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2021-20310
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 08:17 UTC · Revision 1

Source evidence

CVE-2021-20310

core-osv · Original source

Published 11 May 2021, 23:15 UTC

A flaw was found in ImageMagick in versions before 7.0.11, where a division by zero ConvertXYZToJzazbz() of MagickCore/colorspace.c may trigger undefined behavior via a crafted image file that is submitted by an attacker and processed by an application using ImageMagick. The highest threat from this vulnerability is to system availability.

osv:CVE-2021-20310
Complete source record
{
  "id": "c1faeaec120a0a36292f3ee9124548d68b3780fa7ce88c72bb613dbb9d553af6",
  "url": "https://osv.dev/vulnerability/CVE-2021-20310",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-20310",
    "summary": "A flaw was found in ImageMagick in versions before 7.0.11, where a division by zero ConvertXYZToJzazbz() of MagickCore/colorspace.c may trigger undefined behavior via a crafted image file that is submitted by an attacker and processed by an application using ImageMagick. The highest threat from this vulnerability is to system availability.",
    "evidence": "osv:CVE-2021-20310",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-20310",
      "aliases": [
        "CVE-2021-20310"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/imagemagick/imagemagick",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "dc69067b7cf84c0c8abddb07649abcc566323eda"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.0.11-0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
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          "versions": [
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-20310.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:05.382722485Z",
      "provider": "osv",
      "references": [
        "https://bugzilla.redhat.com/show_bug.cgi?id=1946728"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "imagemagick:imagemagick",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "7.0.11-0"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-20310",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440741,
  "published_at": "2021-05-11T23:15:08.77+00:00"
}