Medium 6.7Published Aug 11, 2026

CVE-2026-73067Tesseract: Heap OOB read in the DAWG loader

Updated under an hour ago (2026-10-19 07:50 UTC)

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Every CVE for tesseract-ocr tesseract

Exploited in the last 30 days

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.

CVSS: 6.7 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

tesseract-ocr tesseract tesseract_ocr:tesseract (from the name)	before 5.5.3	CNA record

References

https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-x3vq-7rr7-5x3hx-refsource-confirm
https://github.com/tesseract-ocr/tesseract/issues/4580x-refsource-misc
https://github.com/tesseract-ocr/tesseract/pull/4581x-refsource-misc
https://github.com/tesseract-ocr/tesseract/commit/55287a94b8044c05ce3fd10f5aca6ebbd238e518x-refsource-misc
https://github.com/tesseract-ocr/tesseract/commit/82727cc11c34eaf1249af002d69f6bbae70993b9x-refsource-misc
https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.