Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b66
- https://github.com/tesseract-ocr/tesseract/pull/4588
- https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3
- https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5j
FAQ
What is CVE-2026-73066?
CVE-2026-73066 is a documented vulnerability. 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 Conv...
How severe is CVE-2026-73066?
CVSS scoring is not yet available for CVE-2026-73066. Check NVD for updates.
Is there a patch for CVE-2026-73066?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.