CVE-2026-46521 (GCVE-0-2026-46521)

Vulnerability from cvelistv5 – Published: 2026-06-10 21:40 – Updated: 2026-06-11 13:13
VLAI
Title
ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-131 - Incorrect Calculation of Buffer Size
  • CWE-252 - Unchecked Return Value
  • CWE-787 - Out-of-bounds Write
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: < 6.9.13-48
Affected: < 7.1.2-23
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-46521",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-11T13:13:00.235344Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-11T13:13:17.814Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ImageMagick",
          "vendor": "ImageMagick",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.9.13-48"
            },
            {
              "status": "affected",
              "version": "\u003c 7.1.2-23"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-131",
              "description": "CWE-131: Incorrect Calculation of Buffer Size",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-252",
              "description": "CWE-252: Unchecked Return Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-835",
              "description": "CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-10T21:40:44.045Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jcqp-6r6f-3mfx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jcqp-6r6f-3mfx"
        }
      ],
      "source": {
        "advisory": "GHSA-jcqp-6r6f-3mfx",
        "discovery": "UNKNOWN"
      },
      "title": "ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-46521",
    "datePublished": "2026-06-10T21:40:44.045Z",
    "dateReserved": "2026-05-14T19:12:32.755Z",
    "dateUpdated": "2026-06-11T13:13:17.814Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-46521",
      "date": "2026-06-11",
      "epss": "0.00013",
      "percentile": "0.02164"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-46521\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-06-10T23:16:46.833\",\"lastModified\":\"2026-06-11T18:42:09.680\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-131\"},{\"lang\":\"en\",\"value\":\"CWE-252\"},{\"lang\":\"en\",\"value\":\"CWE-787\"},{\"lang\":\"en\",\"value\":\"CWE-835\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.9.13-48\",\"matchCriteriaId\":\"94748C9C-BB1A-44BF-B154-22D44C9CA92B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.0.0-0\",\"versionEndExcluding\":\"7.1.2-23\",\"matchCriteriaId\":\"436AAC35-44DB-408A-B252-D6CBDC12770D\"}]}]}],\"references\":[{\"url\":\"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jcqp-6r6f-3mfx\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"title\": \"ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression\", \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-131\", \"lang\": \"en\", \"description\": \"CWE-131: Incorrect Calculation of Buffer Size\", \"type\": \"CWE\"}]}, {\"descriptions\": [{\"cweId\": \"CWE-252\", \"lang\": \"en\", \"description\": \"CWE-252: Unchecked Return Value\", \"type\": \"CWE\"}]}, {\"descriptions\": [{\"cweId\": \"CWE-787\", \"lang\": \"en\", \"description\": \"CWE-787: Out-of-bounds Write\", \"type\": \"CWE\"}]}, {\"descriptions\": [{\"cweId\": \"CWE-835\", \"lang\": \"en\", \"description\": \"CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)\", \"type\": \"CWE\"}]}], \"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"LOCAL\", \"availabilityImpact\": \"HIGH\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"scope\": \"UNCHANGED\", \"userInteraction\": \"REQUIRED\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H\", \"version\": \"3.1\"}}], \"references\": [{\"name\": \"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jcqp-6r6f-3mfx\", \"tags\": [\"x_refsource_CONFIRM\"], \"url\": \"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jcqp-6r6f-3mfx\"}], \"affected\": [{\"vendor\": \"ImageMagick\", \"product\": \"ImageMagick\", \"versions\": [{\"version\": \"\u003c 6.9.13-48\", \"status\": \"affected\"}, {\"version\": \"\u003c 7.1.2-23\", \"status\": \"affected\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-06-10T21:40:44.045Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.\"}], \"source\": {\"advisory\": \"GHSA-jcqp-6r6f-3mfx\", \"discovery\": \"UNKNOWN\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-46521\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-11T13:13:00.235344Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-11T13:13:06.471Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-46521\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"GitHub_M\", \"dateReserved\": \"2026-05-14T19:12:32.755Z\", \"datePublished\": \"2026-06-10T21:40:44.045Z\", \"dateUpdated\": \"2026-06-11T13:13:17.814Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.