CVE-2026-73067

Publication date 11 August 2026

Last updated 6 October 2026

Ubuntu priority

Medium

Why this priority?

Description

Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata model loaded through TessBaseAPI::Init can cause SquishedDawg::read_squished_dawg in src/dict/dawg.cpp to accept an unterminated forward-edge run, after which SquishedDawg::Load calls num_forward_edges(0) and last_edge in src/dict/dawg.h reads beyond edges_, causing a heap out-of-bounds read and process crash before image processing. This issue is fixed in version 5.5.3.

Status

Package Ubuntu Release Status
tesseract 26.04 LTS resolute
Fixed 5.5.0-1ubuntu0.1~esm1
24.04 LTS noble
Fixed 5.3.4-1ubuntu0.1~esm1
22.04 LTS jammy
Fixed 4.1.1-2.1ubuntu0.1~esm1
20.04 LTS focal
Fixed 4.1.1-2ubuntu0.1~esm1
18.04 LTS bionic
Fixed 4.00~git2288-10f4998a-2ubuntu0.1~esm1
16.04 LTS xenial Ignored changes too intrusive
14.04 LTS trusty Ignored changes too intrusive

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
tesseract

Severity score breakdown

CVSS version: CVSS v4.0

Base score 6.7 · Medium

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

Related Ubuntu Security Notices (USN)

    • USN-8882-1
    • Tesseract vulnerabilities
    • 6 October 2026

Other references

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