GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-25966 (GCVE-0-2026-25966)

Vulnerability from cvelistv5 – Published: 2026-02-24 01:27 – Updated: 2026-06-23 15:48
VLAI
Title
ImageMagick's Security Policy Bypass through config/policy-secure.xml via "fd handler" leads to stdin/stdout access
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. The shipped "secure" security policy includes a rule intended to prevent reading/writing from standard streams. However, ImageMagick also supports fd:<n> pseudo-filenames (e.g., fd:0, fd:1). Prior to versions 7.1.2-15 and 6.9.13-40, this path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of "no stdin/stdout." Versions 7.1.2-15 and 6.9.13-40 contain a patch by including a change to the more secure policies by default. As a workaround, add the change to one's security policy manually.
Severity
5.9 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-26 21:02 UTC
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version CPE status
ImageMagick ImageMagick Affected: >= 7.0.0, < 7.1.2-15
Affected: < 6.9.13-40
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-25966",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-26T21:02:30.439529Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-23T15:48:03.772Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ImageMagick",
          "vendor": "ImageMagick",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 7.1.2-15"
            },
            {
              "status": "affected",
              "version": "\u003c 6.9.13-40"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ImageMagick is free and open-source software used for editing and manipulating digital images. The shipped \"secure\" security policy includes a rule intended to prevent reading/writing from standard streams. However, ImageMagick also supports fd:\u003cn\u003e pseudo-filenames (e.g., fd:0, fd:1). Prior to versions 7.1.2-15 and 6.9.13-40, this path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of \"no stdin/stdout.\" Versions 7.1.2-15 and 6.9.13-40 contain a patch by including a change to the more secure policies by default. As a workaround, add the change to one\u0027s security policy manually."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-24T01:27:53.943Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h"
        }
      ],
      "source": {
        "advisory": "GHSA-xwc6-v6g8-pw2h",
        "discovery": "UNKNOWN"
      },
      "title": "ImageMagick\u0027s Security Policy Bypass through config/policy-secure.xml via \"fd handler\" leads to stdin/stdout access"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25966",
    "datePublished": "2026-02-24T01:27:53.943Z",
    "dateReserved": "2026-02-09T17:13:54.067Z",
    "dateUpdated": "2026-06-23T15:48:03.772Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-25966",
      "date": "2026-09-15",
      "epss": "0.00135",
      "percentile": "0.0333"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-25966\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-02-24T02:16:01.330\",\"lastModified\":\"2026-06-17T10:25:30.500\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"ImageMagick is free and open-source software used for editing and manipulating digital images. The shipped \\\"secure\\\" security policy includes a rule intended to prevent reading/writing from standard streams. However, ImageMagick also supports fd:\u003cn\u003e pseudo-filenames (e.g., fd:0, fd:1). Prior to versions 7.1.2-15 and 6.9.13-40, this path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of \\\"no stdin/stdout.\\\" Versions 7.1.2-15 and 6.9.13-40 contain a patch by including a change to the more secure policies by default. As a workaround, add the change to one\u0027s security policy manually.\"},{\"lang\":\"es\",\"value\":\"ImageMagick es un software libre y de c\u00f3digo abierto utilizado para editar y manipular im\u00e1genes digitales. La pol\u00edtica de seguridad \u0027segura\u0027 que se distribuye incluye una regla destinada a prevenir la lectura/escritura desde flujos est\u00e1ndar. Sin embargo, ImageMagick tambi\u00e9n soporta pseudo-nombres de archivo fd: (por ejemplo, fd:0, fd:1). Antes de las versiones 7.1.2-15 y 6.9.13-40, esta forma de ruta no es bloqueada por las plantillas de pol\u00edtica segura, y por lo tanto elude el objetivo de protecci\u00f3n de \u0027no stdin/stdout\u0027. Las versiones 7.1.2-15 y 6.9.13-40 contienen un parche al incluir un cambio en las pol\u00edticas m\u00e1s seguras por defecto. Como soluci\u00f3n alternativa, a\u00f1ada el cambio a la pol\u00edtica de seguridad propia manualmente.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"ImageMagick\",\"product\":\"ImageMagick\",\"versions\":[{\"version\":\"\u003e= 7.0.0, \u003c 7.1.2-15\",\"status\":\"affected\"},{\"version\":\"\u003c 6.9.13-40\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.5,\"impactScore\":3.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-02-26T21:02:30.439529Z\",\"id\":\"CVE-2026-25966\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.9.13-40\",\"matchCriteriaId\":\"C6F44A65-1733-4752-AAD0-BCCC7BDBC877\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.0.0-0\",\"versionEndExcluding\":\"7.1.2-15\",\"matchCriteriaId\":\"6AFFD439-1068-4B6F-AE01-724AC62CDCEA\"}]}]}],\"references\":[{\"url\":\"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-17T16:28:29+00:00",
      "cve": "CVE-2026-25966",
      "id": "CVE-2026-25966",
      "initial_release_date": "2026-02-24T01:27:53.943000+00:00",
      "product_status:known_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ImageMagick: ImageMagick: Policy bypass allows unauthorized access to standard streams via fd:\u003cn\u003e pseudo-filenames",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25966.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-15T05:26:06Z",
      "cve": "CVE-2026-25966",
      "id": "CVE-2026-25966",
      "initial_release_date": "2026-02-25T00:24:40Z",
      "product_status:known_affected": "88",
      "product_status:known_not_affected": "16",
      "product_status:recommended": "258",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-25966",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-25966.json",
      "version": "12"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-25966\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-26T21:02:30.439529Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-26T20:57:23.584Z\"}}], \"cna\": {\"title\": \"ImageMagick\u0027s Security Policy Bypass through config/policy-secure.xml via \\\"fd handler\\\" leads to stdin/stdout access\", \"source\": {\"advisory\": \"GHSA-xwc6-v6g8-pw2h\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.9, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"ImageMagick\", \"product\": \"ImageMagick\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 7.0.0, \u003c 7.1.2-15\"}, {\"status\": \"affected\", \"version\": \"\u003c 6.9.13-40\"}]}], \"references\": [{\"url\": \"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h\", \"name\": \"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-xwc6-v6g8-pw2h\", \"tags\": [\"x_refsource_CONFIRM\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"ImageMagick is free and open-source software used for editing and manipulating digital images. The shipped \\\"secure\\\" security policy includes a rule intended to prevent reading/writing from standard streams. However, ImageMagick also supports fd:\u003cn\u003e pseudo-filenames (e.g., fd:0, fd:1). Prior to versions 7.1.2-15 and 6.9.13-40, this path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of \\\"no stdin/stdout.\\\" Versions 7.1.2-15 and 6.9.13-40 contain a patch by including a change to the more secure policies by default. As a workaround, add the change to one\u0027s security policy manually.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-284\", \"description\": \"CWE-284: Improper Access Control\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-02-24T01:27:53.943Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-25966\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-23T15:48:03.772Z\", \"dateReserved\": \"2026-02-09T17:13:54.067Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-02-24T01:27:53.943Z\", \"assignerShortName\": \"GitHub_M\"}",
      "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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.