CVE-2026-88048
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
Tesseract is an open source OCR engine. In version 5.5.3 and earlier, FullyConnected::DeSerialize in src/lstm/fullyconnected.cpp does not validate the deserialized layer scalars ni_ and no_ against the weight-matrix dimensions. During FullyConnected::Forward, MatrixDotVector in src/lstm/weightmatrix.cpp writes w.dim1() results into temp_line, which is sized from no_, and reads w.dim2() minus one inputs from curr_input, which is sized from ni_. A crafted .traineddata NT_SOFTMAX layer can therefore use inconsistent dimensions to cause a heap out-of-bounds write and read on the default LSTM engine, resulting in heap corruption, a crash, information disclosure, or potentially controlled corruption. No fixed release is available as of this review.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| tesseract-ocr | tesseract | <= 5.5.3 | affected |
Weaknesses
- CWE-125: CWE-125: Out-of-bounds Read
- CWE-787: CWE-787: Out-of-bounds Write
References
- https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-q44c-23p6-5mw6
- https://github.com/tesseract-ocr/tesseract/commit/103dc134eb36411ddc6833ec20aa2c76795bd0ff
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