{"id":"UBUNTU-CVE-2026-73067","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.","modified":"2026-08-19T11:11:14Z","published":"2026-08-11T15:17:00Z","upstream":["CVE-2026-73067"],"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/issues/4580"},{"type":"REPORT","url":"https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3"}],"affected":[{"package":{"name":"tesseract","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.02.02-1","3.03.02-3"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract3","binary_version":"3.03.02-3"},{"binary_name":"tesseract-ocr","binary_version":"3.03.02-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.04.00-5ubuntu1","3.04.01-2","3.04.01-4"],"ecosystem_specific":{"binaries":[{"binary_version":"3.04.01-4","binary_name":"libtesseract3"},{"binary_name":"tesseract-ocr","binary_version":"3.04.01-4"},{"binary_name":"tesseract-ocr-all","binary_version":"3.04.01-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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":{"binaries":[{"binary_name":"libtesseract4","binary_version":"4.00~git2288-10f4998a-2"},{"binary_name":"tesseract-ocr","binary_version":"4.00~git2288-10f4998a-2"},{"binary_version":"4.00~git2288-10f4998a-2","binary_name":"tesseract-ocr-all"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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":{"binaries":[{"binary_name":"libtesseract4","binary_version":"4.1.1-2build2"},{"binary_name":"tesseract-ocr","binary_version":"4.1.1-2build2"},{"binary_name":"tesseract-ocr-all","binary_version":"4.1.1-2build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.1-2.1","4.1.1-2.1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract4","binary_version":"4.1.1-2.1build1"},{"binary_name":"tesseract-ocr","binary_version":"4.1.1-2.1build1"},{"binary_name":"tesseract-ocr-all","binary_version":"4.1.1-2.1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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":{"binaries":[{"binary_version":"5.3.4-1build5","binary_name":"libtesseract5"},{"binary_name":"tesseract-ocr","binary_version":"5.3.4-1build5"},{"binary_name":"tesseract-ocr-all","binary_version":"5.3.4-1build5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"}},{"package":{"name":"tesseract","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/tesseract?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.5.0-1","5.5.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtesseract5","binary_version":"5.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