---
title: "CVE-2026-88053: Tesseract - Out of Bounds Read/Write"
description: "Tesseract <= 5.5.3 contains a buffer overflow caused by unvalidated loop bounds from crafted .traineddata file in Classify::ReadIntTemplates, letting attackers cause heap corruption or crash during legacy-classifier initialization, exploit requires crafted .traineddata file."
url: https://panop.io/threat-heartbeat/CVE-2026-88053/
---

# CVE-2026-88053 Tesseract - Out of Bounds Read/Write

Tesseract <= 5.5.3 contains a buffer overflow caused by unvalidated loop bounds from crafted .traineddata file in Classify::ReadIntTemplates, letting attackers cause heap corruption or crash during legacy-classifier initialization, exploit requires crafted .traineddata file.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Required

EPSS

0.18% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-88053)

## Details

Type

Out of Bounds Read/Write

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

10 September 2026

Updated

15 October 2026

Weakness

[CWE-787](https://cwe.mitre.org/data/definitions/787.html)

## Vendor fix

Update to the latest version once a fix is released.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-88053](https://nvd.nist.gov/vuln/detail/CVE-2026-88053)
- [https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-rphx-x795-5qjv](https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-rphx-x795-5qjv)
- [https://github.com/tesseract-ocr/tesseract/commit/8b0574680f3b22f246ade6a4c8e3029104255c63](https://github.com/tesseract-ocr/tesseract/commit/8b0574680f3b22f246ade6a4c8e3029104255c63)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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