---
title: "CVE-2026-88051: Tesseract - Out of Bounds Read/Write"
description: "Tesseract <= 5.5.3 contains a heap out-of-bounds write caused by unchecked size_used_ and reserved fields in GenericVector::read when processing crafted TESSDATA_INTTEMP components, letting attackers cause heap corruption or crash remotely, exploit requires crafted .traineddata file."
url: https://panop.io/threat-heartbeat/CVE-2026-88051/
---

# CVE-2026-88051 Tesseract - Out of Bounds Read/Write

Tesseract <= 5.5.3 contains a heap out-of-bounds write caused by unchecked size\_used\_ and reserved fields in GenericVector::read when processing crafted TESSDATA\_INTTEMP components, letting attackers cause heap corruption or crash remotely, 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

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-88051)

## Details

Type

Out of Bounds Read/Write

Impact

Denial Of Service, Remote Code Execution

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-2026-88051](https://nvd.nist.gov/vuln/detail/CVE-2026-88051)
- [https://github.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0](https://github.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0)
- [https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3](https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3)

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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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