{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-73066", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-10T19:37:41.443Z", "datePublished": "2026-08-11T14:49:16.817Z", "dateUpdated": "2026-08-11T15:36:09.326Z"}, "containers": {"cna": {"title": "Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata", "problemTypes": [{"descriptions": [{"cweId": "CWE-787", "lang": "en", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8"}, {"name": "https://github.com/tesseract-ocr/tesseract/pull/4588", "tags": ["x_refsource_MISC"], "url": "https://github.com/tesseract-ocr/tesseract/pull/4588"}, {"name": "https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72", "tags": ["x_refsource_MISC"], "url": "https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72"}, {"name": "https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3"}], "affected": [{"vendor": "tesseract-ocr", "product": "tesseract", "versions": [{"version": "< 5.5.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-11T14:49:16.817Z"}, "descriptions": [{"lang": "en", "value": "Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata LSTM model component loaded through Tesseract's deserializer can cause an unchecked signed integer multiplication in Convolve::DeSerialize in src/lstm/convolve.cpp to wrap the convolution output-channel count, undersizing the forward-pass output buffer while writes use the unwrapped element count and causing a heap out-of-bounds write during OCR recognition. This issue is fixed in version 5.5.3."}], "source": {"advisory": "GHSA-7j76-5rq5-5jg8", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-11T15:31:52.040987Z", "id": "CVE-2026-73066", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-11T15:36:09.326Z"}}]}}

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