UBUNTU-CVE-2026-73067 (CVE-2026-73067)

Vulnerability from osv_ubuntu – Published: 2026-08-11 15:17 – Updated: 2026-10-06 20:59 – Source website
VLAI
Details

Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata model loaded through TessBaseAPI::Init can cause SquishedDawg::read_squished_dawg in src/dict/dawg.cpp to accept an unterminated forward-edge run, after which SquishedDawg::Load calls num_forward_edges(0) and last_edge in src/dict/dawg.h reads beyond edges_, causing a heap out-of-bounds read and process crash before image processing. This issue is fixed in version 5.5.3.

Severity
6.7 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtesseract3",
            "binary_version": "3.03.02-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr",
            "binary_version": "3.03.02-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "tesseract",
        "purl": "pkg:deb/ubuntu/tesseract@3.03.02-3ubuntu0.1~esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.02.02-1",
        "3.03.02-3",
        "3.03.02-3ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libtesseract3",
            "binary_version": "3.04.01-4ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr",
            "binary_version": "3.04.01-4ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr-all",
            "binary_version": "3.04.01-4ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "tesseract",
        "purl": "pkg:deb/ubuntu/tesseract@3.04.01-4ubuntu0.1~esm1?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.04.00-5ubuntu1",
        "3.04.01-2",
        "3.04.01-4",
        "3.04.01-4ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtesseract4",
            "binary_version": "4.00~git2288-10f4998a-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr",
            "binary_version": "4.00~git2288-10f4998a-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr-all",
            "binary_version": "4.00~git2288-10f4998a-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "tesseract",
        "purl": "pkg:deb/ubuntu/tesseract@4.00~git2288-10f4998a-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.00~git2288-10f4998a-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.04.01-6",
        "3.04.01-6build1",
        "3.04.01-6build2",
        "4.00~git2188-cdc35338-4build1",
        "4.00~git2188-cdc35338-5",
        "4.00~git2207-766b7bd6-3.1",
        "4.00~git2219-40f43111-1.2",
        "4.00~git2288-10f4998a-2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtesseract4",
            "binary_version": "4.1.1-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr",
            "binary_version": "4.1.1-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr-all",
            "binary_version": "4.1.1-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "tesseract",
        "purl": "pkg:deb/ubuntu/tesseract@4.1.1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.1-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.0-1",
        "4.1.0-2",
        "4.1.1-1",
        "4.1.1-2",
        "4.1.1-2build1",
        "4.1.1-2build2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtesseract4",
            "binary_version": "4.1.1-2.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr",
            "binary_version": "4.1.1-2.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr-all",
            "binary_version": "4.1.1-2.1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "tesseract",
        "purl": "pkg:deb/ubuntu/tesseract@4.1.1-2.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.1-2.1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.1-2.1",
        "4.1.1-2.1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtesseract5",
            "binary_version": "5.3.4-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr",
            "binary_version": "5.3.4-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr-all",
            "binary_version": "5.3.4-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "tesseract",
        "purl": "pkg:deb/ubuntu/tesseract@5.3.4-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3.4-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.0-2build1",
        "5.3.3-1",
        "5.3.3-1build1",
        "5.3.4-1",
        "5.3.4-1build3",
        "5.3.4-1build4",
        "5.3.4-1build5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtesseract5",
            "binary_version": "5.5.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr",
            "binary_version": "5.5.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "tesseract-ocr-all",
            "binary_version": "5.5.0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "tesseract",
        "purl": "pkg:deb/ubuntu/tesseract@5.5.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.5.0-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.5.0-1",
        "5.5.0-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata model loaded through TessBaseAPI::Init can cause SquishedDawg::read_squished_dawg in src/dict/dawg.cpp to accept an unterminated forward-edge run, after which SquishedDawg::Load calls num_forward_edges(0) and last_edge in src/dict/dawg.h reads beyond edges_, causing a heap out-of-bounds read and process crash before image processing. This issue is fixed in version 5.5.3.",
  "id": "UBUNTU-CVE-2026-73067",
  "modified": "2026-10-06T20:59:18Z",
  "published": "2026-08-11T15:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-73067"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-73067"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-x3vq-7rr7-5x3h"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/tesseract-ocr/tesseract/pull/4581"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/tesseract-ocr/tesseract/commit/55287a94b8044c05ce3fd10f5aca6ebbd238e518"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/tesseract-ocr/tesseract/commit/82727cc11c34eaf1249af002d69f6bbae70993b9"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8882-1"
    }
  ],
  "related": [
    "USN-8882-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-73067"
  ]
}



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