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CVE-2026-73066

Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
tesseract-ocr / tesseractaffected < 5.5.3

CWE

CWE-787

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.