CVE-2026-73066CWE-787

CVE-2026-73066

published August 11, 2026

CVSS
6.8
EPSS
0%
Percentile
2.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
6.8 · NONE
CVSS v4.0
Not supplied
EPSS
0.00126 · 2.1th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-08-11T19:17Z
References (4)
https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72 · [email protected]https://github.com/tesseract-ocr/tesseract/pull/4588 · [email protected]https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3 · [email protected]https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8 · [email protected]
EPSS history
Timeline
  • 11 AUG 14:49Z
    Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata
    cvelistv5