CVE-2026-88048

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/tesseract-ocr/tesseract/commit/103dc134eb36411ddc6833ec20aa2c76795bd0ff	Patch
https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-q44c-23p6-5mw6	Vendor Advisory
https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-q44c-23p6-5mw6	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:tesseract-ocr:tesseract_ocr:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-09-10 17:17

Updated : 2026-09-14 20:01

NVD link : CVE-2026-88048

Mitre link : CVE-2026-88048

CVE.ORG link : CVE-2026-88048

JSON object : View

Products Affected

tesseract-ocr

tesseract_ocr

CWE

CWE-125

Out-of-bounds Read

CWE-787

Out-of-bounds Write

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