Out-of-bounds Write Affecting tesseract package, versions <4.00~git2288-10f4998a-2ubuntu0.1~esm1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.13% (2nd percentile)

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  • Snyk IDSNYK-UBUNTU1804-TESSERACT-18760447
  • published29 Sept 2026
  • disclosed11 Aug 2026

Introduced: 11 Aug 2026

CVE-2026-73066  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 tesseract to version 4.00git2288-10f4998a-2ubuntu0.1esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tesseract package and not the tesseract package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1