CVE-2026-88049

A flaw was found in Tesseract, an open-source Optical Character Recognition OCR engine. A remote attacker could exploit a heap out-of-bounds write vulnerability in the LSTM::Forward function by providing a specially crafted input. This could lead to heap corruption, application crashes, or...

CVE-2026-88049 Tesseract: Heap out-of-bounds write in LSTM::Forward via na_/gate-matrix dimension mismatch

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, prior .traineddata hardening added bounds checks to NetworkIO::CopyTimeStepGeneral and NetworkIO::Randomize in src/lstm/networkio.cpp but left NetworkIO::WriteTimeStepPart and NetworkIO::AddTimeStepPart unchecked. In...

CVE-2026-88049

Tesseract (open-source OCR engine) versions 5.5.3 and earlier are affected by a heap out-of-bounds write in LSTM::Forward (src/lstm/lstm.cpp). Prior hardening added bounds checks to NetworkIO::CopyTimeStepGeneral and NetworkIO::Randomize but left NetworkIO::WriteTimeStepPart and NetworkIO::AddTim...