VDB
CVE-2026-73066
CVE-2026-73066
PUBLISHED
CVSS 6.8 MEDIUM
Reported by GitHub_M · Published August 11, 2026
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.
Risk Scores
CVSS 4.0
6.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| tesseract-ocr | tesseract | < 5.5.3 |
| tesseract-ocr | tesseract | < 5.5.3 |
Timeline
- Aug 11, 2026 CVE Published
- Aug 11, 2026 CVE Updated
- Aug 12, 2026 Coalition ESS Score
- Aug 16, 2026 Security Advisory
- Aug 24, 2026 EPSS Score
- Sep 14, 2026 EPSS Score
- Sep 20, 2026 Distribution Patch
- Sep 20, 2026 Distribution Patch
- Sep 20, 2026 Distribution Patch
References
- https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8 x_refsource_CONFIRM
- https://github.com/tesseract-ocr/tesseract/pull/4588 x_refsource_MISC
- https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72 x_refsource_MISC
- https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3 x_refsource_MISC