CVE-2026-73066
Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | tesseract-ocr |
| Product | tesseract |
| Published | Aug 11, 2026 |
| Last Updated | Aug 11, 2026 |
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Affected Versions
tesseract-ocr / tesseract
< 5.5.3
References
github.com: https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8 github.com: https://github.com/tesseract-ocr/tesseract/pull/4588 github.com: https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72 github.com: https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3