---
title: "CVE-2026-88048: Tesseract - Out of Bounds Read/Write"
description: "Tesseract <= 5.5.3 contains a heap out-of-bounds read/write caused by improper validation of deserialized layer scalars ni_ and no_ in FullyConnected::DeSerialize, letting attackers cause heap corruption or crash via crafted .traineddata NT_SOFTMAX layer, exploit requires crafted input data."
url: https://panop.io/threat-heartbeat/CVE-2026-88048/
---

# CVE-2026-88048 Tesseract - Out of Bounds Read/Write

Tesseract <= 5.5.3 contains a heap out-of-bounds read/write caused by improper validation of deserialized layer scalars ni\_ and no\_ in FullyConnected::DeSerialize, letting attackers cause heap corruption or crash via crafted .traineddata NT\_SOFTMAX layer, exploit requires crafted input data.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-88048)

## Details

Type

Out of Bounds Read/Write

Impact

Denial Of Service, Information Disclosure

CVSS vector

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

Published

10 September 2026

Updated

15 October 2026

Weakness

[CWE-125](https://cwe.mitre.org/data/definitions/125.html)

## Vendor fix

Update to the latest version once a fixed release is available.

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-2026-88048](https://nvd.nist.gov/vuln/detail/CVE-2026-88048)
- [https://github.com/tesseract-ocr/tesseract/commit/103dc134eb36411ddc6833ec20aa2c76795bd0ff](https://github.com/tesseract-ocr/tesseract/commit/103dc134eb36411ddc6833ec20aa2c76795bd0ff)
- [https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-q44c-23p6-5mw6](https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-q44c-23p6-5mw6)

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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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