CVE-2026-78465 (GCVE-0-2026-78465)

Vulnerability from cvelistv5 – Published: 2026-08-24 16:28 – Updated: 2026-08-31 13:54
VLAI
Title
Gimp: integer overflow in pcx loader (planes=4) leads to heap overflow on 32-bit
Summary
A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large dimensions, the calculation exceeds the 32-bit integer limit and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when the plugin subsequently writes image data into the undersized buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 18:00 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Date Public
2026-07-24 00:00
Credits
Red Hat would like to thank Zhixi "Jace" Sun for reporting this issue.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-78465",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-24T18:00:09.876826Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-24T18:00:19.816Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://gitlab.gnome.org/GNOME/gimp",
          "defaultStatus": "affected",
          "packageName": "gimp",
          "product": "GIMP",
          "vendor": "GNOME"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unknown",
          "packageName": "gimp",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "gimp",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "defaultStatus": "unaffected",
          "packageName": "gimp:2.8/gimp",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "unaffected",
          "packageName": "gimp",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Red Hat would like to thank Zhixi \"Jace\" Sun for reporting this issue."
        }
      ],
      "datePublic": "2026-07-24T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large dimensions, the calculation exceeds the 32-bit integer limit and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when the plugin subsequently writes image data into the undersized buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Important"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-190",
              "description": "Integer Overflow or Wraparound",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-31T13:54:22.926Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-78465"
        },
        {
          "name": "RHBZ#2522057",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2522057"
        },
        {
          "url": "https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-08-24T16:01:58.499Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-07-24T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Gimp: integer overflow in pcx loader (planes=4) leads to heap overflow on 32-bit",
      "workarounds": [
        {
          "lang": "en",
          "value": "To mitigate this vulnerability, do not open PCX files from untrusted sources with GIMP."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-190: Integer Overflow or Wraparound"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-78465",
    "datePublished": "2026-08-24T16:28:12.574Z",
    "dateReserved": "2026-08-24T16:22:00.262Z",
    "dateUpdated": "2026-08-31T13:54:22.926Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-78465",
      "date": "2026-09-21",
      "epss": "0.00235",
      "percentile": "0.14675"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://gitlab.gnome.org/GNOME/gimp",
                "defaultStatus": "affected",
                "packageName": "gimp",
                "product": "GIMP",
                "vendor": "GNOME"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:6"
                ],
                "defaultStatus": "unknown",
                "packageName": "gimp",
                "product": "Red Hat Enterprise Linux 6",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:7"
                ],
                "defaultStatus": "unaffected",
                "packageName": "gimp",
                "product": "Red Hat Enterprise Linux 7",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:8"
                ],
                "defaultStatus": "unaffected",
                "packageName": "gimp:2.8/gimp",
                "product": "Red Hat Enterprise Linux 8",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:9"
                ],
                "defaultStatus": "unaffected",
                "packageName": "gimp",
                "product": "Red Hat Enterprise Linux 9",
                "vendor": "Red Hat"
              }
            ],
            "source": "secalert@redhat.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:gimp:gimp:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DB5B05ED-02FF-452D-B028-CE07B6204E56",
                    "versionEndIncluding": "3.2.4",
                    "versionStartIncluding": "3.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:gimp:gimp:3.3.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D2ABDCC7-1F05-4E0D-A671-14A01E363F3D",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large dimensions, the calculation exceeds the 32-bit integer limit and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when the plugin subsequently writes image data into the undersized buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service."
          }
        ],
        "id": "CVE-2026-78465",
        "lastModified": "2026-09-01T14:23:04.900",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.0,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 5.9,
              "source": "secalert@redhat.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-78465",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-24T18:00:09.876826Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-24T17:18:20.810",
        "references": [
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2026-78465"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2522057"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Issue Tracking",
              "Vendor Advisory",
              "Exploit",
              "Mitigation"
            ],
            "url": "https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "tags": [
              "Issue Tracking",
              "Vendor Advisory",
              "Exploit",
              "Mitigation"
            ],
            "url": "https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-190"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-31T13:54:18+00:00",
      "cve": "CVE-2026-78465",
      "id": "CVE-2026-78465",
      "initial_release_date": "2026-07-24T00:00:00+00:00",
      "product_status:known_affected": "6",
      "product_status:known_not_affected": "26",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "gimp: integer overflow in PCX loader (planes=4) leads to heap overflow on 32-bit",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-78465.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-17T16:58:01Z",
      "cve": "CVE-2026-78465",
      "id": "CVE-2026-78465",
      "initial_release_date": "2026-08-28T16:38:24Z",
      "product_status:known_affected": "26",
      "product_status:recommended": "18",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-78465",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-78465.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-78465",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-24T18:00:09.876826Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-24T17:59:56.566Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://gitlab.gnome.org/GNOME/gimp",
              "defaultStatus": "affected",
              "packageName": "gimp",
              "product": "GIMP",
              "vendor": "GNOME"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:6"
              ],
              "defaultStatus": "unknown",
              "packageName": "gimp",
              "product": "Red Hat Enterprise Linux 6",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:7"
              ],
              "defaultStatus": "unaffected",
              "packageName": "gimp",
              "product": "Red Hat Enterprise Linux 7",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:8"
              ],
              "defaultStatus": "unaffected",
              "packageName": "gimp:2.8/gimp",
              "product": "Red Hat Enterprise Linux 8",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:9"
              ],
              "defaultStatus": "unaffected",
              "packageName": "gimp",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "Red Hat would like to thank Zhixi \"Jace\" Sun for reporting this issue."
            }
          ],
          "datePublic": "2026-07-24T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large dimensions, the calculation exceeds the 32-bit integer limit and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when the plugin subsequently writes image data into the undersized buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Important"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-190",
                  "description": "Integer Overflow or Wraparound",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-31T13:54:22.926Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-78465"
            },
            {
              "name": "RHBZ#2522057",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2522057"
            },
            {
              "url": "https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-08-24T16:01:58.499Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-07-24T00:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Gimp: integer overflow in pcx loader (planes=4) leads to heap overflow on 32-bit",
          "workarounds": [
            {
              "lang": "en",
              "value": "To mitigate this vulnerability, do not open PCX files from untrusted sources with GIMP."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-190: Integer Overflow or Wraparound"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-78465",
        "datePublished": "2026-08-24T16:28:12.574Z",
        "dateReserved": "2026-08-24T16:22:00.262Z",
        "dateUpdated": "2026-08-31T13:54:22.926Z",
        "state": "PUBLISHED"
      },
      "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.