CVE-2026-73066 — Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata
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…
Published: 2026-08-11 · CVSS: 6.8 · CVSS 4.0
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: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7